How to use them
Use them in the same routine morning or night. Apply Polyglutamic Acid first, then Zinc PCA, moving from thinnest to thickest texture. Finish with sunscreen in the morning.
- 1CleanseGentle cleanser, pat dry
- 2Polyglutamic Acid1% – 3%, wait about 1 minute
- 3Zinc PCA1%
- 4Moisturiserseal everything in
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 →
What Zinc PCA does
Zinc salts help regulate sebum and have mild anti-inflammatory and antibacterial effects. That is why zinc so often appears next to niacinamide in oil-control serums.
- Typical strength
- 1%
- When
- AM/PM
- Irritation
- Best for
- Oily And Combination skin
Everything that pairs with Zinc PCA →
Frequently asked questions
Can I use Polyglutamic Acid and Zinc PCA together?
Yes, it is safe. There is no known chemical conflict between Polyglutamic Acid and Zinc PCA, and neither makes the other less effective.
Which goes first, Polyglutamic Acid or Zinc PCA?
Apply Polyglutamic Acid first, then Zinc PCA. The general rule is thinnest to thickest texture, and lowest pH first.
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.
Should I use Zinc PCA in the morning or at night?
Zinc PCA: works morning or night. Use once or twice daily. It works best as part of a niacinamide or oil-control serum.