How to use them
Use them in the same routine morning or night. Apply Glutathione first, then Zinc PCA, moving from thinnest to thickest texture. Finish with sunscreen in the morning.
- 1CleanseGentle cleanser, pat dry
- 2Glutathione1% – 2%, wait about 1 minute
- 3Zinc PCA1%
- 4Moisturiserseal everything in
What Glutathione does
A popular "glow" antioxidant in India. Topically it has some evidence for mild brightening, but it is a large, unstable molecule. Expect modest results compared with vitamin C, arbutin or niacinamide.
- Typical strength
- 1% – 2%
- When
- AM/PM
- Irritation
- Best for
- Normal, Oily, Combination, Dry And Sensitive skin
Everything that pairs with Glutathione →
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 Glutathione and Zinc PCA together?
Yes, it is safe. There is no known chemical conflict between Glutathione and Zinc PCA, and neither makes the other less effective.
Which goes first, Glutathione or Zinc PCA?
Apply Glutathione first, then Zinc PCA. The general rule is thinnest to thickest texture, and lowest pH first.
Should I use Glutathione in the morning or at night?
Glutathione: works morning or night. Use daily as part of a brightening routine, always with sunscreen. Glutathione injections and drips for skin whitening are not approved for that use and carry real risks.
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.
Is Glutathione with Zinc PCA safe during pregnancy?
Neither is a known risk in normal cosmetic amounts, but guidance varies for Glutathione. Check with your doctor.