A brightening vitamin C serum from COSRX, Vitamin C 23 delivers a lightweight gel-serum texture that absorbs quickly without heaviness. Ideal for dull or uneven skin seeking radiance and tone correction, it’s presented fragrance-free and suitable for layering under moisturizers. Expect notes on efficacy, tolerability, and which skin types may benefit most from regular use.
Ingredient Safety
No risk4
Low risk28
Moderate risk1