Galactonic Acid
INCI: Gluconolactone
Polyhydroxy acid, a structural sibling of lactobionic acid. Used in very gentle acid formulations for sensitive skin and post-procedure recovery. A larger molecule than AHAs, it acts mostly at the surface without provoking stinging or redness. Moisturising effect from multiple hydroxyl groups.
Evidence by route
Topical application
CWeak evidence. In vitro data, open-label studies, or expert consensus.
Clinical data on isolated galactonic acid are scarce. Most PHA research covers gluconolactone and lactobionic acid. Within multi-PHA serums it adds to the overall gentle exfoliation.
- Green BA et al. Clin Dermatol. 2009;27(5):495-501.
Tolerability and safety
Irritation potential
LowAllergen risk
LowPregnancy
SafeSkin types
Suitable for
Frequently asked questions
Is Galactonic Acid safe during pregnancy?
Galactonic Acid is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Galactonic Acid for?
Galactonic Acid suits: normal, dry, combination, sensitive.