How to use them
Use them in the same routine at night. Apply Zinc PCA first, then Retinal, moving from thinnest to thickest texture.
- 1CleanseGentle cleanser, pat dry
- 2Zinc PCA1%, wait about 1 minute
- 3Retinal0.05% – 0.2%
- 4Moisturiserseal everything in
What Retinal does
Retinaldehyde is one conversion step closer to retinoic acid than retinol, so it works faster than retinol while usually being gentler than tretinoin. It also has a mild antibacterial effect useful for acne.
- Typical strength
- 0.05% – 0.2%
- When
- PM
- Irritation
- Best for
- Normal, Oily, Combination And Dry skin
Everything that pairs with Retinal →
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 →
Trying to choose one? Read Retinal vs Zinc PCA: which is better for your skin.
Frequently asked questions
Can I use Retinal and Zinc PCA together?
Yes, it is safe. There is no known chemical conflict between Retinal and Zinc PCA, and neither makes the other less effective. They share a goal (acne), so together they reinforce each other.
Which goes first, Retinal or Zinc PCA?
Apply Zinc PCA first, then Retinal. The general rule is thinnest to thickest texture, and lowest pH first.
Should I use Retinal in the morning or at night?
Retinal: best at night. Start at 0.05% two or three nights a week and build up slowly. Buffer with moisturiser if you are sensitive, and wear SPF daily.
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 Retinal with Zinc PCA safe during pregnancy?
Retinal is generally avoided during pregnancy and breastfeeding. Ask your doctor about safer alternatives such as azelaic acid or bakuchiol.