Glow Deep Serum: Rice + Arbutin

Yes, this serum is generally considered safe during pregnancy and breastfeeding. It does not contain retinoids, salicylic acid, hydroquinone, or chemical sunscreens — the main ingredients to avoid during pregnancy. Alpha-arbutin, the key active, is a plant-derived brightening agent with no known pregnancy concerns. However, the brand recommends consulting your doctor before use, as hormonal changes during pregnancy can affect skin sensitivity.

No, this serum is not considered fungal acne safe. It contains sorbitan isostearate and hydrolyzed jojoba esters, which are known triggers for malassezia-prone skin. If you have active fungal acne, consider the Beauty of Joseon Calming Serum (Green Tea + Panthenol) or the Revive Serum (Ginseng + Snail Mucin), both of which are fungal acne safe. Some users with mild fungal acne have reported success by using this serum on a rotating basis rather than daily.

Yes! Alpha-arbutin is compatible with most active ingredients, including retinol, vitamin C, AHA, and BHA. In fact, combining arbutin with vitamin C or niacinamide can enhance brightening results since they target different steps in the melanin production pathway. You can apply this serum before retinol in your PM routine, or use it in the AM with vitamin C. If layering with acids like AHA/BHA, apply the acid first, wait for it to absorb, then follow with this serum.

This serum is formulated for all skin types and works particularly well for oily, combination, and normal skin thanks to its lightweight, watery texture. Dry skin types can also benefit but should layer a richer moisturizer on top. It is especially suited for anyone dealing with dullness, dark spots, hyperpigmentation, post-acne marks, or uneven skin tone. Sensitive skin types can generally use it well due to the fragrance-free, alcohol-free formula, but a patch test is always recommended.

Hydration and a dewy glow are noticeable from the very first application. For brightening and dark spot fading, expect to see initial improvements in skin tone and radiance after 3–4 weeks. Meaningful reduction in hyperpigmentation typically takes 6–12 weeks of consistent daily use, as skin takes approximately 6 weeks to complete a full turnover cycle. Alpha-arbutin works gradually by inhibiting melanin production, so patience and consistency are key.

Apply this serum after cleansing and toning, but before heavier serums, moisturizer, and sunscreen. In a full routine: Cleanser → Toner → Glow Deep Serum → (other serums if applicable) → Moisturizer → Sunscreen (AM only). The brand recommends using it in the evening since alpha-arbutin is sensitive to light and heat, but many users successfully incorporate it in both AM and PM routines. Always use sunscreen in the daytime when using brightening products.

This serum has a very low comedogenic rating of 1 out of 5, meaning it is very unlikely to clog pores. The formula is completely oil-free and contains no heavy occlusives or waxes. Its watery, fast-absorbing texture leaves no residue. Most users with acne-prone or oily skin report no issues with breakouts. However, as with any skincare product, individual reactions can vary, so a patch test is recommended if your skin tends to be reactive.

The official Period After Opening (PAO) is 12 months. Unopened, the product has a shelf life of 3 years from the manufacturing date (printed on packaging). However, because alpha-arbutin is sensitive to light and heat, Beauty of Joseon recommends using the product promptly after opening and storing it in a cool, dark place. The 30ml bottle typically lasts 3–5 weeks with daily use (2–3 drops per application), so you will likely finish it well before the PAO expires.