COSRX The Niacinamide 15 Serum
COSRX The Niacinamide 15 Serum
4.85 / 5.0
(20) 20 total reviews
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A concentrated serum with 15% niacinamide, zinc PCA, and allantoin to brighten skin, reduce acne marks, and control oil production.
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from 182 reviewsAbsorbs quickly, and my skin drinks it up!

Controls oil but doesn’t dry out my skin. Love it!

This keeps me oil-free even in humid weather!

Completely invisible and blends effortlessly.

Doesn’t pill or feel heavy under foundation.

Gives my skin such a healthy, natural glow. Definitely a must-have in my routine!

This sunscreen is unbelievably light yet moisturizing. I love it!

Makes my skin feel bouncy, hydrated, and fresh.

My skin tone looks more even, and my skin feels soft all day.

Stays matte all day without feeling sticky or heavy.

Makes my skin look naturally radiant and healthy.

I have oily skin, and this sunscreen keeps me fresh all day.

Perfect sunscreen for my brown skin—blends in completely with no white cast!

I love how light this feels on my skin. Absorbs instantly and keeps my face hydrated all day.

Keeps my skin hydrated even in harsh winters.

Controls oil but doesn’t dry out my skin. Love it!
My skin tone looks more even, and my skin feels soft all day.
My acne has reduced significantly after consistent use.
My acne marks are slowly fading away — love this!
My skin feels smoother and breakouts are less frequent.


