Gluconolactone
Gluconolactone is a gentle, multi-tasking skincare ingredient that belongs to the PHA (polyhydroxy acid) family. It works as a mild exfoliant, humectant and antioxidant, making it a favourite for sensitive or easily irritated skin. Often found in toners, serums and moisturisers, it helps refine texture while being kinder than traditional AHAs.
How it works in skincare
In cosmetics and skincare, gluconolactone functions as a next-generation acid that gently exfoliates by breaking down the bonds between dead skin cells on the surface without the irritation commonly associated with glycolic or lactic acid. Its larger molecular size prevents deep penetration, making it ideal for daily use, while its humectant properties attract and bind moisture to the skin. It also acts as a chelating agent and antioxidant, helping to stabilise formulas and protect against free-radical damage, leaving skin smoother, brighter and better hydrated.
Key benefits
- Gentle surface exfoliation for smoother texture
- Boosts skin hydration and moisture retention
- Strengthens the skin barrier
- Helps reduce the appearance of fine lines
- Calms and soothes sensitive or reactive skin
- Provides antioxidant protection against environmental stress
Best for
sensitive skin, dry skin, mature skin, reactive skin, acne-prone skin, rosacea-prone skin
Where it comes from
Gluconolactone is naturally derived from the oxidation of glucose, which is sourced from corn or other plant starches.