Niacinamide 15 Serum

Name: COSRX Niacinamide 15 Serum
Brand: COSRX

serumbudget

Overall score7.6

Buy at Olive Young

Amazon YesStyle

✶ Hero ingredients

#2Niacinamide

Vitamin B3 that brightens and strengthens skin barrier

#3Glycerin

One of the most effective humectants

#4Butylene Glycol

Lightweight humectant and solvent

Score breakdown

Overall

7.6

Hydration Efficacy6.7

Irritation Risk9.5

We may earn a commission from purchases made through our links, at no extra cost to you. This helps us keep Gracie free and independent.

Active Ingredient Strength5.1

Ingredient Transparency7.8

Formulation Safety9.0

Estimated — based on ingredient analysis. Scores refine as user reviews are added.

What makes COSRX Niacinamide 15 Serum stand out

COSRX Niacinamide 15 Serum is a solid serum with an overall score of 7.6/9.8. Positioned in the budget bracket, it delivers a well-rounded formulation that balances efficacy with gentleness. The formula leads with Niacinamide, Glycerin, Butylene Glycol — ingredients that actively target skin concerns.

It performs well on hydration (6.7) and low irritation risk (9.5).

Is this right for you?

Great for

✓Sensitive skin — low irritation risk with a gentle formulation
✓Safety-conscious shoppers — clean formulation with minimal flags
✓Ingredient-aware buyers — transparent, well-documented formula

Key ingredients

✶
Niacinamide
Works on your skin — #2 in the INCI list
✶
Glycerin
Draws in moisture — #3 in the INCI list
✶
Butylene Glycol
Draws in moisture — #4 in the INCI list
✶
Panthenol
Draws in moisture — #6 in the INCI list
✶
Allantoin
Works on your skin — #7 in the INCI list

Full ingredient list

13 ingredients — listed in INCI order (highest concentration first)

#1Water #2Niacinamide #3Glycerin #4Butylene Glycol #52-Hexanediol #6Panthenol #7Allantoin #8Sodium Hyaluronate #9Zinc Pca #10Adenosine #11Carbomer #12Arginine #13Ethylhexylglycerin

Compare with similar products

Ingredient breakdown

Works on your skin4
Draws in moisture4
Other ingredient3
Holds the formula together1
Keeps the product fresh1

Some links on this site are affiliate links. We may earn a commission from purchases made through our links, at no extra cost to you. This helps us keep Gracie free and independent.