The Alpha-Arbutin 2 Discoloration Care Serum
COSRX The Alpha-Arbutin 2 Discoloration Care Serum scores 8.1/9.8 overall. It ranks highest in low irritation risk (9.5) and formulation safety (9.0).
✶ Hero ingredients
Draws in moisture
One of the most effective humectants
Vitamin B3 that brightens and strengthens skin barrier
Score breakdown
Estimated — based on ingredient analysis. Scores refine as user reviews are added.
Scores last verified: July 2026
What makes COSRX The Alpha-Arbutin 2 Discoloration Care Serum stand out
COSRX The Alpha-Arbutin 2 Discoloration Care Serum is an excellent serum with an overall score of 8.1/9.8. Positioned in the mid-range bracket, it delivers a well-rounded formulation that balances efficacy with gentleness. The formula leads with Propanediol, Glycerin, Niacinamide — ingredients that support the skin barrier and moisture levels.
It performs well on hydration (7.3) and low irritation risk (9.5).
Is this right for you?
Great for
- ✓Dry or dehydrated skin — strong moisture-binding profile
- ✓Sensitive skin — low irritation risk with a gentle formulation
- ✓Safety-conscious shoppers — clean formulation with minimal flags
Key ingredients
- ✶Propanediol
Draws in moisture — #2 in the INCI list
- ✶Glycerin
Draws in moisture — #3 in the INCI list
- ✶Niacinamide
Works on your skin — #4 in the INCI list
- ✶Tranexamic Acid
Works on your skin — #5 in the INCI list
- ✶Acetyl Glucosamine
Works on your skin — #6 in the INCI list
What creators are saying
TikTokReviewers consistently praise the Alpha-Arbutin 2 Discoloration Care Serum for its effectiveness at fading dark spots, post-acne marks, and hyperpigmentation through its science-backed blend of brightening ingredients, with many noting visible results within days to weeks of use. They appreciate that it's gentle and non-irritating, water-based, and suitable for sensitive and oily skin types, making it accessible for various skin concerns. The product is recommended for anyone struggling with uneven tone, discoloration, or post-inflammatory hyperpigmentation who wants a reliable, dermatologist-approved solution.
Based on 5 creator reviewsFull ingredient list
33 ingredients — listed in INCI order (highest concentration first)
Compare with similar products
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- innisfree Vitamin C Brightening Serum-Infused Mask for Dark Spots9.7
- innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars9.6
- Skinfix barrier+ Triple Lipid Activating Serum With Plumping Peptides and Niacinamide9.6
Ingredient breakdown
- Draws in moisture9
- Works on your skin9
- Formula balancers4
- Other ingredient3
- Keeps the product fresh3
- Holds the formula together3
- Softens and smooths2