The 6 Peptide Skin Booster Serum
A lightweight, toner-like serum featuring 6 powerful peptides to address fine lines, uneven texture, and loss of firmness. Clinically tested to improve skin elasticity, hydration, and radiance while prepping skin for enhanced absorption of subsequent skincare products.
โจ Texture & Feel
6 Multi-Action Peptides
Comprehensive peptide complex targeting firmness, texture, pores, brightness, and soothing for multi-benefit anti-aging care.
Copper Peptide Technology
GHK-Cu (Copper Tripeptide-1) stimulates collagen and elastin production for improved skin firmness and wound healing.
Niacinamide Boost
Vitamin B3 helps regulate sebum, minimize pores, brighten skin tone, and strengthen the skin barrier.
Clinically Proven Results
Independent testing shows +162.5% hydration, +76.4% texture improvement, and +40.1% clarity enhancement.
๐ก๏ธ Safety & Compatibility
No retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Peptides, niacinamide, and hyaluronic acid are considered safe during pregnancy.
Contains Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, and Palmitoyl Tripeptide-8 which may feed Malassezia yeast.
Clinically tested by Dermacosmetic Skin Science Laboratory to not clog pores. Suitable for acne-prone skin.
Layers well with Vitamin C, Retinol, AHA/BHA, Ceramides, and Snail Mucin. Low-irritation formula for daily use.
๐ฌ Ingredient Breakdown
๐งฌ Acetyl Hexapeptide-8 (Argireline) 1.4-2.1% Proven
Known as "Botox in a jar," this peptide targets wrinkles caused by facial muscle movement. Works by reducing muscle contractions that cause expression lines.
- Clinical Study: 10% solution reduced wrinkle depth by 17% in 15 days around the eyes.
- Mechanism: Targets the same wrinkle-forming pathway as Botox but through topical application.
๐ฌ Copper Tripeptide-1 (GHK-Cu) 1.2-1.7% Proven
A naturally occurring copper-peptide complex with unique wound healing and anti-aging properties. Stimulates collagen, elastin, and glycosaminoglycan production.
- Research: 1998 study showed increased procollagen production in 70% of participants.
- Benefits: Improves skin elasticity, clarity, firmness, and reduces lines and wrinkles.
๐ช Dipeptide Diaminobutyroyl Benzylamide Diacetate 0.5-1.15% Promising
A "Syn-Ake" type peptide targeting expression wrinkles similar to Argireline. Helps with pore and sebum control.
- Clinical Data: 4% concentration showed 21% smoother skin and up to 52% wrinkle reduction in 28 days.
- Effect: 80% of volunteers showed measurable smoothing effect.
โ๏ธ Oligopeptide-68 (ฮฒ-White) 0.4-0.9% Promising
A skin-brightening peptide with a unique mechanism targeting melanin production by inhibiting the MITF gene.
- Study: 5% formula used for 56 days: 87% reported more uniform skin tone, 91% felt brighter skin.
- Mechanism: Works on both constitutive (natural) and facultative (tanning) pigmentation.
๐ฟ Palmitoyl Tripeptide-8 0.2-0.75% Promising
A soothing peptide that helps calm and alleviate skin sensitivity. Reduces inflammation and helps skin recover from environmental stressors.
- Function: Anti-inflammatory properties help reduce redness and irritation.
โจ Niacinamide (Vitamin B3) 1.6-2.5% Proven
A well-studied, multi-tasking active that supports skin barrier, regulates oil production, reduces acne, and improves skin tone.
- Benefits: Fights photodamage, reduces pigmentation marks, strengthens barrier function.
- Stability: Very stable ingredient that works well in almost any formulation.
44 ingredients
Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Acetyl Hexapeptide-8, Copper Tripeptide-1, SH-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, Palmitoyl Tripeptide-8, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium PCA, Sodium Lactate, PCA, Glutamic Acid, Lysine HCl, Tocopherol, Dextran, Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, t-Butyl Alcohol, Potassium Sorbate, Sodium Oleate
๐ Where It Fits in Your Routine
Use as the first step after cleansing to prep and awaken skin. Apply multiple layers to amplify the effects of your next serum or ampoule.
๐ How to Use
Cleanse Your Face
Start with a clean, freshly washed face. Pat dry gently with a soft towel.
Dispense 2-3 Pumps
Press the pump dispenser to release the watery serum into your palms or directly onto your face.
Pat Gently Into Skin
Spread evenly over face and neck. Gently pat and press until fully absorbed. Can layer multiple times for enhanced effect.
Continue Your Routine
Follow with your next serum, moisturizer, and SPF (morning). Use twice daily for best results.
๐ค Who Is It For?
โ Perfect for you if:
- You want to prevent early signs of aging
- You have multiple skin concerns (texture, pores, dullness)
- You prefer lightweight, non-sticky textures
- You want a product that layers well with other actives
- You're looking for an affordable peptide serum
- You're pregnant or breastfeeding
- You want clinically-tested results
โ Consider alternatives if:
- You have fungal acne (malassezia folliculitis)
- You prefer thick, creamy serums
- You need heavy-duty anti-aging (consider retinol)
- You're allergic to soybean-derived ingredients
- You want visible dramatic results in under 2 weeks
๐ฏ Skin Type Compatibility
Ultra-lightweight watery texture absorbs instantly without adding shine or greasiness. Niacinamide helps control sebum.
Provides hydration boost with hyaluronic acid and amino acids. Layer with a richer moisturizer for optimal results.
Balances well across different face zones. Lightweight enough for T-zone, hydrating enough for dry areas.
Fragrance-free, dermatologically tested formula. Contains soothing ingredients like allantoin. Clinically proven non-irritating.
Non-comedogenic tested. However, not suitable for fungal acne due to soybean oil content. Great for regular acne-prone skin.
Six peptides target multiple signs of aging. Copper peptide supports collagen production. Best used with retinol for enhanced results.
๐ Results Timeline
Instant Hydration & Glow
Skin feels immediately softer and more hydrated. Many users notice enhanced glow and smoothness within the first few days of daily application.
85% noticed improvementImproved Texture & Absorption
Skin texture begins to refine. Pores appear smaller. Other skincare products absorb better when layered on top.
78% noticed improvementClinical Results Visible
Independent clinical testing shows measurable improvements: +162.5% hydration, +76.4% texture improvement, +40.1% skin clarity enhancement.
100% reported smoother skinFirmness & Anti-Aging Benefits
Peptide benefits become more pronounced. Visible reduction in fine lines. Improved skin elasticity and firmness. Brighter, more even skin tone.
91% noticed brighter skinโญ Ratings by Platform
โ๏ธ Pros & Cons
โ Praised
- Exceptional value - 150ml at affordable price point
- Lightweight, non-sticky texture absorbs instantly
- Fragrance-free and gentle on sensitive skin
- Layers beautifully with other products
- Clinically proven results
- Six different peptides for multi-action benefits
- Great for beginners to anti-aging
- Pregnancy and breastfeeding safe
โ Criticized
- Not fungal acne safe (contains soybean oil)
- Results require 4+ weeks of consistent use
- Too watery for those who prefer thick serums
- Some find the pump dispenses too much product
- May not be enough for advanced aging concerns
- Rare reports of breakouts in sensitive individuals
๐ฐ Budget-Friendly Alternatives (Dupes)
Same peptide concept with Matrixyl and Argireline. Slightly thicker texture, smaller size (30ml). Contains lactococcus ferment which may trigger fungal acne. Great for targeted anti-aging.
Higher copper peptide concentration for more advanced anti-aging. Blue-tinted serum. Cannot be used with direct acids or vitamin C. Better for mature skin concerns.
Simpler formula with Matrixyl 3000 and Syn-Tacks. Smaller size (30ml). Lightweight texture. Good entry-level peptide option but fewer actives than COSRX.
๐ Comparison with Competitors
COSRX 6 Peptide Skin Booster
$25.00The Ordinary Buffet
$20.00The INKEY List Collagen Peptide
$10.99๐ฆ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight. Refrigeration not required but can extend shelf life.
Opaque pump bottle protects light-sensitive ingredients. Hygienic dispensing prevents contamination.
No - 150ml exceeds 100ml TSA liquid limit. Transfer to smaller container or purchase travel size (30ml).
โ Frequently Asked Questions
Yes, this serum is considered safe for use during pregnancy and breastfeeding. It contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. The peptides, niacinamide, and hyaluronic acid in this formula are all pregnancy-safe ingredients. However, always consult with your healthcare provider before adding new products to your routine during pregnancy.
No, this serum is NOT fungal acne safe. It contains Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, and Palmitoyl Tripeptide-8, which can feed the Malassezia yeast that causes fungal acne. If you have fungal acne or pityrosporum folliculitis, consider alternatives like COSRX Snail 96 Mucin Essence which is fungal acne safe.
Yes! This serum is specifically formulated for compatibility with other active ingredients. It layers well with Vitamin C, Retinol, AHAs, BHAs, Niacinamide, Ceramides, and Snail Mucin. Apply the peptide serum first after cleansing, allow it to absorb, then follow with your other actives. The low-irritation formula makes it safe for daily use even with exfoliating acids or retinoids.
This serum is suitable for ALL skin types including sensitive, oily, dry, combination, and mature skin. Clinical testing confirms it's safe for sensitive and acne-prone conditions. The lightweight, watery texture works especially well for oily and combination skin types, while dry skin types may want to layer with a heavier moisturizer afterward.
You may notice improved hydration and glow within the first week. Visible improvements in texture are typically observed after 2-3 weeks. Clinical testing shows measurable results after 4 weeks of consistent use (+162.5% hydration, +76.4% texture improvement). Anti-aging benefits like reduced fine lines and improved firmness become more apparent after 6-8 weeks of daily use.
Apply immediately after cleansing as the FIRST step in your skincare routine. This serum acts as a "booster" that preps your skin and enhances the absorption of subsequent products. After applying 2-3 pumps and letting it absorb, follow with your toner, essence, other serums, moisturizer, and SPF (in the morning).
No, this serum has been clinically tested and confirmed to be non-comedogenic. It has a comedogenic rating of 1/5. The Dermacosmetic Skin Science Laboratory testing confirms it won't clog pores or cause irritation, even with continuous use. It's suitable for acne-prone skin (though not for fungal acne specifically).
The Period After Opening (PAO) is 12 months. Once opened, use within one year for best results. The 150ml bottle typically lasts 2-3 months with twice-daily use. Store in a cool, dry place away from direct sunlight. While refrigeration isn't required, it can help extend the shelf life and provide a refreshing application experience.
Verdict: The COSRX 6 Peptide Skin Booster Serum offers exceptional value in the peptide skincare category. With 150ml of product featuring six clinically-backed peptides, niacinamide, and hyaluronic acid at an affordable price point, it delivers professional-grade anti-aging care accessible to all budgets. The lightweight, fragrance-free formula works for virtually all skin types and layers beautifully with other actives. While not suitable for fungal acne sufferers and requiring 4+ weeks for visible results, it's an excellent choice for those beginning their anti-aging journey or anyone seeking a multi-tasking, pregnancy-safe peptide serum.
Original: $16.20
-70%$16.20
$4.86The 6 Peptide Skin Booster Serum
A lightweight, toner-like serum featuring 6 powerful peptides to address fine lines, uneven texture, and loss of firmness. Clinically tested to improve skin elasticity, hydration, and radiance while prepping skin for enhanced absorption of subsequent skincare products.
โจ Texture & Feel
6 Multi-Action Peptides
Comprehensive peptide complex targeting firmness, texture, pores, brightness, and soothing for multi-benefit anti-aging care.
Copper Peptide Technology
GHK-Cu (Copper Tripeptide-1) stimulates collagen and elastin production for improved skin firmness and wound healing.
Niacinamide Boost
Vitamin B3 helps regulate sebum, minimize pores, brighten skin tone, and strengthen the skin barrier.
Clinically Proven Results
Independent testing shows +162.5% hydration, +76.4% texture improvement, and +40.1% clarity enhancement.
๐ก๏ธ Safety & Compatibility
No retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Peptides, niacinamide, and hyaluronic acid are considered safe during pregnancy.
Contains Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, and Palmitoyl Tripeptide-8 which may feed Malassezia yeast.
Clinically tested by Dermacosmetic Skin Science Laboratory to not clog pores. Suitable for acne-prone skin.
Layers well with Vitamin C, Retinol, AHA/BHA, Ceramides, and Snail Mucin. Low-irritation formula for daily use.
๐ฌ Ingredient Breakdown
๐งฌ Acetyl Hexapeptide-8 (Argireline) 1.4-2.1% Proven
Known as "Botox in a jar," this peptide targets wrinkles caused by facial muscle movement. Works by reducing muscle contractions that cause expression lines.
- Clinical Study: 10% solution reduced wrinkle depth by 17% in 15 days around the eyes.
- Mechanism: Targets the same wrinkle-forming pathway as Botox but through topical application.
๐ฌ Copper Tripeptide-1 (GHK-Cu) 1.2-1.7% Proven
A naturally occurring copper-peptide complex with unique wound healing and anti-aging properties. Stimulates collagen, elastin, and glycosaminoglycan production.
- Research: 1998 study showed increased procollagen production in 70% of participants.
- Benefits: Improves skin elasticity, clarity, firmness, and reduces lines and wrinkles.
๐ช Dipeptide Diaminobutyroyl Benzylamide Diacetate 0.5-1.15% Promising
A "Syn-Ake" type peptide targeting expression wrinkles similar to Argireline. Helps with pore and sebum control.
- Clinical Data: 4% concentration showed 21% smoother skin and up to 52% wrinkle reduction in 28 days.
- Effect: 80% of volunteers showed measurable smoothing effect.
โ๏ธ Oligopeptide-68 (ฮฒ-White) 0.4-0.9% Promising
A skin-brightening peptide with a unique mechanism targeting melanin production by inhibiting the MITF gene.
- Study: 5% formula used for 56 days: 87% reported more uniform skin tone, 91% felt brighter skin.
- Mechanism: Works on both constitutive (natural) and facultative (tanning) pigmentation.
๐ฟ Palmitoyl Tripeptide-8 0.2-0.75% Promising
A soothing peptide that helps calm and alleviate skin sensitivity. Reduces inflammation and helps skin recover from environmental stressors.
- Function: Anti-inflammatory properties help reduce redness and irritation.
โจ Niacinamide (Vitamin B3) 1.6-2.5% Proven
A well-studied, multi-tasking active that supports skin barrier, regulates oil production, reduces acne, and improves skin tone.
- Benefits: Fights photodamage, reduces pigmentation marks, strengthens barrier function.
- Stability: Very stable ingredient that works well in almost any formulation.
44 ingredients
Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Acetyl Hexapeptide-8, Copper Tripeptide-1, SH-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, Palmitoyl Tripeptide-8, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium PCA, Sodium Lactate, PCA, Glutamic Acid, Lysine HCl, Tocopherol, Dextran, Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, t-Butyl Alcohol, Potassium Sorbate, Sodium Oleate
๐ Where It Fits in Your Routine
Use as the first step after cleansing to prep and awaken skin. Apply multiple layers to amplify the effects of your next serum or ampoule.
๐ How to Use
Cleanse Your Face
Start with a clean, freshly washed face. Pat dry gently with a soft towel.
Dispense 2-3 Pumps
Press the pump dispenser to release the watery serum into your palms or directly onto your face.
Pat Gently Into Skin
Spread evenly over face and neck. Gently pat and press until fully absorbed. Can layer multiple times for enhanced effect.
Continue Your Routine
Follow with your next serum, moisturizer, and SPF (morning). Use twice daily for best results.
๐ค Who Is It For?
โ Perfect for you if:
- You want to prevent early signs of aging
- You have multiple skin concerns (texture, pores, dullness)
- You prefer lightweight, non-sticky textures
- You want a product that layers well with other actives
- You're looking for an affordable peptide serum
- You're pregnant or breastfeeding
- You want clinically-tested results
โ Consider alternatives if:
- You have fungal acne (malassezia folliculitis)
- You prefer thick, creamy serums
- You need heavy-duty anti-aging (consider retinol)
- You're allergic to soybean-derived ingredients
- You want visible dramatic results in under 2 weeks
๐ฏ Skin Type Compatibility
Ultra-lightweight watery texture absorbs instantly without adding shine or greasiness. Niacinamide helps control sebum.
Provides hydration boost with hyaluronic acid and amino acids. Layer with a richer moisturizer for optimal results.
Balances well across different face zones. Lightweight enough for T-zone, hydrating enough for dry areas.
Fragrance-free, dermatologically tested formula. Contains soothing ingredients like allantoin. Clinically proven non-irritating.
Non-comedogenic tested. However, not suitable for fungal acne due to soybean oil content. Great for regular acne-prone skin.
Six peptides target multiple signs of aging. Copper peptide supports collagen production. Best used with retinol for enhanced results.
๐ Results Timeline
Instant Hydration & Glow
Skin feels immediately softer and more hydrated. Many users notice enhanced glow and smoothness within the first few days of daily application.
85% noticed improvementImproved Texture & Absorption
Skin texture begins to refine. Pores appear smaller. Other skincare products absorb better when layered on top.
78% noticed improvementClinical Results Visible
Independent clinical testing shows measurable improvements: +162.5% hydration, +76.4% texture improvement, +40.1% skin clarity enhancement.
100% reported smoother skinFirmness & Anti-Aging Benefits
Peptide benefits become more pronounced. Visible reduction in fine lines. Improved skin elasticity and firmness. Brighter, more even skin tone.
91% noticed brighter skinโญ Ratings by Platform
โ๏ธ Pros & Cons
โ Praised
- Exceptional value - 150ml at affordable price point
- Lightweight, non-sticky texture absorbs instantly
- Fragrance-free and gentle on sensitive skin
- Layers beautifully with other products
- Clinically proven results
- Six different peptides for multi-action benefits
- Great for beginners to anti-aging
- Pregnancy and breastfeeding safe
โ Criticized
- Not fungal acne safe (contains soybean oil)
- Results require 4+ weeks of consistent use
- Too watery for those who prefer thick serums
- Some find the pump dispenses too much product
- May not be enough for advanced aging concerns
- Rare reports of breakouts in sensitive individuals
๐ฐ Budget-Friendly Alternatives (Dupes)
Same peptide concept with Matrixyl and Argireline. Slightly thicker texture, smaller size (30ml). Contains lactococcus ferment which may trigger fungal acne. Great for targeted anti-aging.
Higher copper peptide concentration for more advanced anti-aging. Blue-tinted serum. Cannot be used with direct acids or vitamin C. Better for mature skin concerns.
Simpler formula with Matrixyl 3000 and Syn-Tacks. Smaller size (30ml). Lightweight texture. Good entry-level peptide option but fewer actives than COSRX.
๐ Comparison with Competitors
COSRX 6 Peptide Skin Booster
$25.00The Ordinary Buffet
$20.00The INKEY List Collagen Peptide
$10.99๐ฆ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight. Refrigeration not required but can extend shelf life.
Opaque pump bottle protects light-sensitive ingredients. Hygienic dispensing prevents contamination.
No - 150ml exceeds 100ml TSA liquid limit. Transfer to smaller container or purchase travel size (30ml).
โ Frequently Asked Questions
Yes, this serum is considered safe for use during pregnancy and breastfeeding. It contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. The peptides, niacinamide, and hyaluronic acid in this formula are all pregnancy-safe ingredients. However, always consult with your healthcare provider before adding new products to your routine during pregnancy.
No, this serum is NOT fungal acne safe. It contains Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, and Palmitoyl Tripeptide-8, which can feed the Malassezia yeast that causes fungal acne. If you have fungal acne or pityrosporum folliculitis, consider alternatives like COSRX Snail 96 Mucin Essence which is fungal acne safe.
Yes! This serum is specifically formulated for compatibility with other active ingredients. It layers well with Vitamin C, Retinol, AHAs, BHAs, Niacinamide, Ceramides, and Snail Mucin. Apply the peptide serum first after cleansing, allow it to absorb, then follow with your other actives. The low-irritation formula makes it safe for daily use even with exfoliating acids or retinoids.
This serum is suitable for ALL skin types including sensitive, oily, dry, combination, and mature skin. Clinical testing confirms it's safe for sensitive and acne-prone conditions. The lightweight, watery texture works especially well for oily and combination skin types, while dry skin types may want to layer with a heavier moisturizer afterward.
You may notice improved hydration and glow within the first week. Visible improvements in texture are typically observed after 2-3 weeks. Clinical testing shows measurable results after 4 weeks of consistent use (+162.5% hydration, +76.4% texture improvement). Anti-aging benefits like reduced fine lines and improved firmness become more apparent after 6-8 weeks of daily use.
Apply immediately after cleansing as the FIRST step in your skincare routine. This serum acts as a "booster" that preps your skin and enhances the absorption of subsequent products. After applying 2-3 pumps and letting it absorb, follow with your toner, essence, other serums, moisturizer, and SPF (in the morning).
No, this serum has been clinically tested and confirmed to be non-comedogenic. It has a comedogenic rating of 1/5. The Dermacosmetic Skin Science Laboratory testing confirms it won't clog pores or cause irritation, even with continuous use. It's suitable for acne-prone skin (though not for fungal acne specifically).
The Period After Opening (PAO) is 12 months. Once opened, use within one year for best results. The 150ml bottle typically lasts 2-3 months with twice-daily use. Store in a cool, dry place away from direct sunlight. While refrigeration isn't required, it can help extend the shelf life and provide a refreshing application experience.
Verdict: The COSRX 6 Peptide Skin Booster Serum offers exceptional value in the peptide skincare category. With 150ml of product featuring six clinically-backed peptides, niacinamide, and hyaluronic acid at an affordable price point, it delivers professional-grade anti-aging care accessible to all budgets. The lightweight, fragrance-free formula works for virtually all skin types and layers beautifully with other actives. While not suitable for fungal acne sufferers and requiring 4+ weeks for visible results, it's an excellent choice for those beginning their anti-aging journey or anyone seeking a multi-tasking, pregnancy-safe peptide serum.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
A lightweight, toner-like serum featuring 6 powerful peptides to address fine lines, uneven texture, and loss of firmness. Clinically tested to improve skin elasticity, hydration, and radiance while prepping skin for enhanced absorption of subsequent skincare products.
โจ Texture & Feel
6 Multi-Action Peptides
Comprehensive peptide complex targeting firmness, texture, pores, brightness, and soothing for multi-benefit anti-aging care.
Copper Peptide Technology
GHK-Cu (Copper Tripeptide-1) stimulates collagen and elastin production for improved skin firmness and wound healing.
Niacinamide Boost
Vitamin B3 helps regulate sebum, minimize pores, brighten skin tone, and strengthen the skin barrier.
Clinically Proven Results
Independent testing shows +162.5% hydration, +76.4% texture improvement, and +40.1% clarity enhancement.
๐ก๏ธ Safety & Compatibility
No retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Peptides, niacinamide, and hyaluronic acid are considered safe during pregnancy.
Contains Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, and Palmitoyl Tripeptide-8 which may feed Malassezia yeast.
Clinically tested by Dermacosmetic Skin Science Laboratory to not clog pores. Suitable for acne-prone skin.
Layers well with Vitamin C, Retinol, AHA/BHA, Ceramides, and Snail Mucin. Low-irritation formula for daily use.
๐ฌ Ingredient Breakdown
๐งฌ Acetyl Hexapeptide-8 (Argireline) 1.4-2.1% Proven
Known as "Botox in a jar," this peptide targets wrinkles caused by facial muscle movement. Works by reducing muscle contractions that cause expression lines.
- Clinical Study: 10% solution reduced wrinkle depth by 17% in 15 days around the eyes.
- Mechanism: Targets the same wrinkle-forming pathway as Botox but through topical application.
๐ฌ Copper Tripeptide-1 (GHK-Cu) 1.2-1.7% Proven
A naturally occurring copper-peptide complex with unique wound healing and anti-aging properties. Stimulates collagen, elastin, and glycosaminoglycan production.
- Research: 1998 study showed increased procollagen production in 70% of participants.
- Benefits: Improves skin elasticity, clarity, firmness, and reduces lines and wrinkles.
๐ช Dipeptide Diaminobutyroyl Benzylamide Diacetate 0.5-1.15% Promising
A "Syn-Ake" type peptide targeting expression wrinkles similar to Argireline. Helps with pore and sebum control.
- Clinical Data: 4% concentration showed 21% smoother skin and up to 52% wrinkle reduction in 28 days.
- Effect: 80% of volunteers showed measurable smoothing effect.
โ๏ธ Oligopeptide-68 (ฮฒ-White) 0.4-0.9% Promising
A skin-brightening peptide with a unique mechanism targeting melanin production by inhibiting the MITF gene.
- Study: 5% formula used for 56 days: 87% reported more uniform skin tone, 91% felt brighter skin.
- Mechanism: Works on both constitutive (natural) and facultative (tanning) pigmentation.
๐ฟ Palmitoyl Tripeptide-8 0.2-0.75% Promising
A soothing peptide that helps calm and alleviate skin sensitivity. Reduces inflammation and helps skin recover from environmental stressors.
- Function: Anti-inflammatory properties help reduce redness and irritation.
โจ Niacinamide (Vitamin B3) 1.6-2.5% Proven
A well-studied, multi-tasking active that supports skin barrier, regulates oil production, reduces acne, and improves skin tone.
- Benefits: Fights photodamage, reduces pigmentation marks, strengthens barrier function.
- Stability: Very stable ingredient that works well in almost any formulation.
44 ingredients
Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Acetyl Hexapeptide-8, Copper Tripeptide-1, SH-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, Palmitoyl Tripeptide-8, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium PCA, Sodium Lactate, PCA, Glutamic Acid, Lysine HCl, Tocopherol, Dextran, Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, t-Butyl Alcohol, Potassium Sorbate, Sodium Oleate
๐ Where It Fits in Your Routine
Use as the first step after cleansing to prep and awaken skin. Apply multiple layers to amplify the effects of your next serum or ampoule.
๐ How to Use
Cleanse Your Face
Start with a clean, freshly washed face. Pat dry gently with a soft towel.
Dispense 2-3 Pumps
Press the pump dispenser to release the watery serum into your palms or directly onto your face.
Pat Gently Into Skin
Spread evenly over face and neck. Gently pat and press until fully absorbed. Can layer multiple times for enhanced effect.
Continue Your Routine
Follow with your next serum, moisturizer, and SPF (morning). Use twice daily for best results.
๐ค Who Is It For?
โ Perfect for you if:
- You want to prevent early signs of aging
- You have multiple skin concerns (texture, pores, dullness)
- You prefer lightweight, non-sticky textures
- You want a product that layers well with other actives
- You're looking for an affordable peptide serum
- You're pregnant or breastfeeding
- You want clinically-tested results
โ Consider alternatives if:
- You have fungal acne (malassezia folliculitis)
- You prefer thick, creamy serums
- You need heavy-duty anti-aging (consider retinol)
- You're allergic to soybean-derived ingredients
- You want visible dramatic results in under 2 weeks
๐ฏ Skin Type Compatibility
Ultra-lightweight watery texture absorbs instantly without adding shine or greasiness. Niacinamide helps control sebum.
Provides hydration boost with hyaluronic acid and amino acids. Layer with a richer moisturizer for optimal results.
Balances well across different face zones. Lightweight enough for T-zone, hydrating enough for dry areas.
Fragrance-free, dermatologically tested formula. Contains soothing ingredients like allantoin. Clinically proven non-irritating.
Non-comedogenic tested. However, not suitable for fungal acne due to soybean oil content. Great for regular acne-prone skin.
Six peptides target multiple signs of aging. Copper peptide supports collagen production. Best used with retinol for enhanced results.
๐ Results Timeline
Instant Hydration & Glow
Skin feels immediately softer and more hydrated. Many users notice enhanced glow and smoothness within the first few days of daily application.
85% noticed improvementImproved Texture & Absorption
Skin texture begins to refine. Pores appear smaller. Other skincare products absorb better when layered on top.
78% noticed improvementClinical Results Visible
Independent clinical testing shows measurable improvements: +162.5% hydration, +76.4% texture improvement, +40.1% skin clarity enhancement.
100% reported smoother skinFirmness & Anti-Aging Benefits
Peptide benefits become more pronounced. Visible reduction in fine lines. Improved skin elasticity and firmness. Brighter, more even skin tone.
91% noticed brighter skinโญ Ratings by Platform
โ๏ธ Pros & Cons
โ Praised
- Exceptional value - 150ml at affordable price point
- Lightweight, non-sticky texture absorbs instantly
- Fragrance-free and gentle on sensitive skin
- Layers beautifully with other products
- Clinically proven results
- Six different peptides for multi-action benefits
- Great for beginners to anti-aging
- Pregnancy and breastfeeding safe
โ Criticized
- Not fungal acne safe (contains soybean oil)
- Results require 4+ weeks of consistent use
- Too watery for those who prefer thick serums
- Some find the pump dispenses too much product
- May not be enough for advanced aging concerns
- Rare reports of breakouts in sensitive individuals
๐ฐ Budget-Friendly Alternatives (Dupes)
Same peptide concept with Matrixyl and Argireline. Slightly thicker texture, smaller size (30ml). Contains lactococcus ferment which may trigger fungal acne. Great for targeted anti-aging.
Higher copper peptide concentration for more advanced anti-aging. Blue-tinted serum. Cannot be used with direct acids or vitamin C. Better for mature skin concerns.
Simpler formula with Matrixyl 3000 and Syn-Tacks. Smaller size (30ml). Lightweight texture. Good entry-level peptide option but fewer actives than COSRX.
๐ Comparison with Competitors
COSRX 6 Peptide Skin Booster
$25.00The Ordinary Buffet
$20.00The INKEY List Collagen Peptide
$10.99๐ฆ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight. Refrigeration not required but can extend shelf life.
Opaque pump bottle protects light-sensitive ingredients. Hygienic dispensing prevents contamination.
No - 150ml exceeds 100ml TSA liquid limit. Transfer to smaller container or purchase travel size (30ml).
โ Frequently Asked Questions
Yes, this serum is considered safe for use during pregnancy and breastfeeding. It contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. The peptides, niacinamide, and hyaluronic acid in this formula are all pregnancy-safe ingredients. However, always consult with your healthcare provider before adding new products to your routine during pregnancy.
No, this serum is NOT fungal acne safe. It contains Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, and Palmitoyl Tripeptide-8, which can feed the Malassezia yeast that causes fungal acne. If you have fungal acne or pityrosporum folliculitis, consider alternatives like COSRX Snail 96 Mucin Essence which is fungal acne safe.
Yes! This serum is specifically formulated for compatibility with other active ingredients. It layers well with Vitamin C, Retinol, AHAs, BHAs, Niacinamide, Ceramides, and Snail Mucin. Apply the peptide serum first after cleansing, allow it to absorb, then follow with your other actives. The low-irritation formula makes it safe for daily use even with exfoliating acids or retinoids.
This serum is suitable for ALL skin types including sensitive, oily, dry, combination, and mature skin. Clinical testing confirms it's safe for sensitive and acne-prone conditions. The lightweight, watery texture works especially well for oily and combination skin types, while dry skin types may want to layer with a heavier moisturizer afterward.
You may notice improved hydration and glow within the first week. Visible improvements in texture are typically observed after 2-3 weeks. Clinical testing shows measurable results after 4 weeks of consistent use (+162.5% hydration, +76.4% texture improvement). Anti-aging benefits like reduced fine lines and improved firmness become more apparent after 6-8 weeks of daily use.
Apply immediately after cleansing as the FIRST step in your skincare routine. This serum acts as a "booster" that preps your skin and enhances the absorption of subsequent products. After applying 2-3 pumps and letting it absorb, follow with your toner, essence, other serums, moisturizer, and SPF (in the morning).
No, this serum has been clinically tested and confirmed to be non-comedogenic. It has a comedogenic rating of 1/5. The Dermacosmetic Skin Science Laboratory testing confirms it won't clog pores or cause irritation, even with continuous use. It's suitable for acne-prone skin (though not for fungal acne specifically).
The Period After Opening (PAO) is 12 months. Once opened, use within one year for best results. The 150ml bottle typically lasts 2-3 months with twice-daily use. Store in a cool, dry place away from direct sunlight. While refrigeration isn't required, it can help extend the shelf life and provide a refreshing application experience.
Verdict: The COSRX 6 Peptide Skin Booster Serum offers exceptional value in the peptide skincare category. With 150ml of product featuring six clinically-backed peptides, niacinamide, and hyaluronic acid at an affordable price point, it delivers professional-grade anti-aging care accessible to all budgets. The lightweight, fragrance-free formula works for virtually all skin types and layers beautifully with other actives. While not suitable for fungal acne sufferers and requiring 4+ weeks for visible results, it's an excellent choice for those beginning their anti-aging journey or anyone seeking a multi-tasking, pregnancy-safe peptide serum.
