Polyhydroxy acid (PHA)
Gluconolactone (PHA)
INCI: Gluconolactone·Studied at 4–10% (leave-on)·Moderate evidence
A polyhydroxy acid, the gentlest of the exfoliating acid families, studied for the appearance of a smoother surface with very little sting. It is a large molecule that also holds water.
Studied for
- ·The appearance of a smoother, more even surface
- ·The look of refined texture with minimal irritation
- ·The appearance of hydrated skin
How it’s thought to work
A large multi-hydroxyl molecule that works mostly at the surface and is studied for gentle exfoliation plus humectant and antioxidant support; it is milder than AHAs and less likely to raise sun sensitivity.