COSRX The Niacinamide 15 Serum 20ml

Water, Butylene Glycol, Niacinamide, Glycerin, 1,2-Hexanediol, Allantoin, Panthenol, Ethyl Ascorbyl Ether, Sodium Hyaluronate, Adenosine, Melaleuca Alternifolia (Tea Tree) Leaf Extract, Centella Asiatica Extract, Portulaca Oleracea Extract, Hydroxyethylcellulose, Carbomer, Arginine, Ethylhexylglycerin, Disodium EDTA

Apply 2-3 drops to clean skin after toning. Gently pat until absorbed, then follow with moisturizer. Use morning and/or evening.

Q: Is 15% niacinamide too strong for daily use? A: While 15% is a high concentration, this formula includes soothing ingredients to buffer potential irritation. However, those new to niacinamide may want to start with every other day use and gradually increase frequency. Q: What skin concerns does this address? A: This serum primarily targets enlarged pores, uneven skin tone, excess sebum production, and helps strengthen the skin barrier. It also provides brightening benefits and can help with mild hyperpigmentation. Q: Can I use this with vitamin C? A: While older theories suggested not using them together, current research indicates they can be used in the same routine. However, if you experience flushing, consider using them at different times of day. Q: How long will the 20ml bottle last? A: With daily use, the 20ml size typically lasts 4-6 weeks depending on how liberally it's applied. Q: Can this help with acne? A: Yes, niacinamide helps regulate sebum production and has anti-inflammatory properties that can reduce the severity and frequency of breakouts, especially when combined with the tea tree extract in this formula.