PHA
Gluconolactone
Also known as: Polyhydroxy Acid · Gluconolactone · Lactobionic Acid
ExfoliatingMoisturising
“The gentlest chemical exfoliant — all the benefits of AHAs with none of the sting.”
What it does
Polyhydroxy acids (PHAs) are large-molecule exfoliants that work similarly to AHAs but penetrate more slowly due to their larger size. Gluconolactone is the most common PHA and has the added benefit of being a humectant, drawing moisture into the skin as it exfoliates. It also has antioxidant properties and is suitable for even the most reactive skin types.
Benefits
- Gently exfoliates without irritation, ideal for sensitive skin
- Acts as a humectant, hydrating while it exfoliates
- Supports barrier function rather than compromising it
- Reduces hyperpigmentation and uneven texture over time
- Compatible with rosacea-prone and reactive skin
How to layer
🌙 Evening routine
Cleanser
Toner
Serum
Moisturiser
Face Oil
As the last step in your routine
Good for
Sensitive skinDry skinNormal skinCombination skinOily skin
Works well with
Heads up
- ⚠Slower-acting than AHAs — requires consistent use for visible results
- ⚠Still increases photosensitivity; SPF is recommended
How to use
Use as a toner or serum once daily, building to twice daily if tolerated. Ideal for those too sensitive for glycolic or lactic acid.
Typical concentration: 3–10%