COSRX Refresh AHA BHA Vitamin C Booster Serum 30ml

A lightweight, watery serum that gently addresses what daily life leaves behind on your skin — dullness, uneven texture, small blemishes. Kiwi, dragon fruit, and stabilised vitamin C: three sources of brightness in a 30 ml bottle worth keeping on your morning shelf.

Texture and actives — The texture is genuinely watery, almost liquid — it absorbs within seconds and leaves no residue. Exfoliation is built on a combination of Glycolic Acid (AHA) and Betaine Salicylate (BHA), two acids that work at the skin's surface to smooth texture without any scrubbing. Niacinamide at 2% gradually evens out radiance. Ascorbyl Glucoside — a stabilised form of vitamin C — helps even skin tone without oxidising when exposed to air. Hylocereus Undatus Fruit Extract (dragon fruit) and Actinidia Chinensis Fruit Extract (kiwi) bring their natural moisturising fraction. Sodium Hyaluronate and Allantoin round out the formula so exfoliation stays comfortable, even on combination to oily skin.

In your routine — Apply after toner, before moisturiser — two to three pumps are enough to cover the face. Pat it in with your palms rather than rubbing, to let the acids settle evenly. In the morning, sunscreen is non-negotiable: glycolic acid increases skin's sensitivity to UV rays. The 30 ml bottle is ideal for testing the routine over four to six weeks before committing to a larger size.

• Gentle chemical exfoliation: Glycolic Acid (AHA) + Betaine Salicylate (BHA) with no physical scrubbing.
• 2% Niacinamide to gradually work on an even, brighter complexion.
• Ascorbyl Glucoside: a stabilised form of vitamin C, less prone to oxidation than pure ascorbic acid.
• Fast-absorbing, watery texture — formulated for combination to oily skin types.
• Daily sun protection is essential when using this serum (exfoliating acids increase photosensitivity).