Gluconolactone

Gluconolactone is a polyhydroxy acid formed from gluconic acid and used across leave-on and rinse-off skincare formats. It provides mild exfoliation along with humectant and antioxidant functions, supporting smoother texture and comfortable hydration in formulas.
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Snapshot

Overview
A gentle PHA that smooths texture and hydrates without irritation.
Category
Exfoliating, Hydration, Sensitive Skin, Antioxidant, Tone/Texture
Type
Exfoliant

Ratings

Overall Rating

Great

Comedogenic Risk

None

Not typically evaluated for comedogenicity — no standardized rating available.

Is Gluconolactone a Good Ingredient?

It earns Great as a well-supported PHA that delivers gentle exfoliation along with humectant and antioxidant benefits, and clinical and in-use data consistently show lower irritation than many AHAs. It's also formulation-friendly and generally stable in water-based systems, which together justify the top rating.

Skin Benefits

Gently refines uneven texture while drawing in moisture, leaving skin soft and more even-looking; often suitable for easily irritated skin.

Uses in Skincare & Cosmetics

Common in leave-on toners, serums, and moisturizers for daily smoothing. Also found in low-strength peel solutions and cleansers designed for sensitive-skin exfoliation.

Safety

Usually well tolerated, including on sensitive skin, though mild stinging or dryness can occur, so start slowly. As with any exfoliant, increased sensitivity to sun is possible; use sunscreen. No widely recognized topical regulatory restrictions.