Kojic Acid
Kojic Acid
Last verified: 2026-08-14
What is Kojic Acid?
Kojic Acid (Kojic Acid) is an active ingredient commonly found in skincare sold in Thailand. Tyrosinase inhibitor for brightening.
Current evidence: Brightener; can irritate. Typical concentration in finished products is 1-2% Best suited for: Brightening & dark spots — found in 4 products in the BangkokFillers database
Efficacy by skin concern
Safety notes
- ⚠Can irritate — start at a low concentration
Combining with other ingredients
✓Can pair with niacinamide, but is more irritation-prone than arbutin or tranexamic acid on its own.
⚠Avoid stacking with strong acid exfoliants or retinol on the same night, contact sensitisation is more common with this active.
What Thai users say about this on Pantip
Products with this ingredient(4)
Sources
Frequently asked
What is Kojic Acid?
Kojic Acid (Kojic Acid) is an active ingredient commonly found in skincare sold in Thailand. Tyrosinase inhibitor for brightening. Current evidence: Brightener; can irritate. Typical concentration in finished products is 1-2% Best suited for: Brightening & dark spots — found in 4 products in the BangkokFillers database
What are the safety concerns with Kojic Acid?
Can irritate — start at a low concentration
Can Kojic Acid be combined with other ingredients?
Can pair with niacinamide, but is more irritation-prone than arbutin or tranexamic acid on its own. Avoid stacking with strong acid exfoliants or retinol on the same night, contact sensitisation is more common with this active.
What concentration of Kojic Acid should I use?
The typical effective concentration for Kojic Acid is 1-2%. Check the product label and increase gradually to minimise irritation.
What skin concerns does Kojic Acid help with?
Kojic Acid is effective for: Brightening & dark spots — found in 4 products in the BangkokFillers database.
Which products contain Kojic Acid?
There are 4 products in the BangkokFillers database containing Kojic Acid, including HER HYNESS 3D Power Acne Clear Gel 12ml, HER HYNESS 3D Power Acne Clear Gel 7ml, Yerpall Intensive Herbal Vitamin Scrub 150g and 1 more.