How to use them
Use them in the same routine morning or night. Apply Polyglutamic Acid first, then Kojic Acid, moving from thinnest to thickest texture. Finish with sunscreen in the morning.
- 1CleanseGentle cleanser, pat dry
- 2Polyglutamic Acid1% – 3%, wait about 1 minute
- 3Kojic Acid1% – 2%
- 4Moisturiserseal everything in
What Kojic Acid does
Derived from fungi used in rice wine and soy sauce production, kojic acid blocks the enzyme that makes melanin. It is effective on dark spots but can cause contact sensitivity in some people.
- Typical strength
- 1% – 2%
- When
- AM/PM
- Irritation
- Best for
- Normal, Oily And Combination skin
Everything that pairs with Kojic Acid →
What Polyglutamic Acid does
A bigger-molecule humectant that forms a moisture-holding film on the skin. It is often paired with hyaluronic acid for plump, long-lasting hydration.
- Typical strength
- 1% – 3%
- When
- AM/PM
- Irritation
- Best for
- Dry, Normal, Combination, Sensitive And Oily skin
Everything that pairs with Polyglutamic Acid →
Frequently asked questions
Can I use Kojic Acid and Polyglutamic Acid together?
Yes, it is safe. There is no known chemical conflict between Kojic Acid and Polyglutamic Acid, and neither makes the other less effective.
Which goes first, Kojic Acid or Polyglutamic Acid?
Apply Polyglutamic Acid first, then Kojic Acid. The general rule is thinnest to thickest texture, and lowest pH first.
Should I use Kojic Acid in the morning or at night?
Kojic Acid: works morning or night. Patch test first. Use once daily at first, then build up.
Should I use Polyglutamic Acid in the morning or at night?
Polyglutamic Acid: works morning or night. Apply after toner and before moisturiser, morning or night.
Is Kojic Acid with Polyglutamic Acid safe during pregnancy?
Neither is a known risk in normal cosmetic amounts, but guidance varies for Kojic Acid. Check with your doctor.