How to use them
Use them in the same routine morning or night. Apply PHA first, then Niacinamide, moving from thinnest to thickest texture. Finish with sunscreen in the morning.
- 1CleanseGentle cleanser, pat dry
- 2PHA3% – 10%, wait about 1 minute
- 3Niacinamide2% – 10%
- 4Moisturiserseal everything in
What Niacinamide does
An all-rounder that controls oil, strengthens the skin barrier, reduces redness and evens out tone. It gets along with almost every other active, which is why it is in so many routines.
- Typical strength
- 2% – 10%
- When
- AM/PM
- Irritation
- Best for
- Oily, Combination, Normal, Sensitive And Dry skin
Everything that pairs with Niacinamide →
What PHA does
Polyhydroxy acids are the gentlest chemical exfoliants. They work only on the surface, hydrate at the same time, and are usually tolerated by sensitive and rosacea-prone skin.
- Typical strength
- 3% – 10%
- When
- AM/PM
- Irritation
- Best for
- Sensitive, Dry And Normal skin
Everything that pairs with PHA →
Frequently asked questions
Can I use Niacinamide and PHA together?
Yes, it is safe. There is no known chemical conflict between Niacinamide and PHA, and neither makes the other less effective.
Which goes first, Niacinamide or PHA?
Apply PHA first, then Niacinamide. The general rule is thinnest to thickest texture, and lowest pH first.
Should I use Niacinamide in the morning or at night?
Niacinamide: works morning or night. Use morning, night or both, after water-based serums. 4–5% is enough for most people. Very high percentages can cause flushing on sensitive skin.
Should I use PHA in the morning or at night?
PHA: works morning or night. You can use it daily. It is a good first acid, or a way to keep exfoliating on retinoid "rest" nights if your skin tolerates it.