The ingredient, explained

Gluconolactone

An ingredient studied in a topical lotion for mild-to-moderate acne.

PHA exfoliantChelatingSkin conditioning

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Ingredient guide

What it is and what it does

D-Glucono-1‚5-lactone

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

PHA exfoliant: Polyhydroxy acid category, including gluconolactone. Specific exfoliating results depend on the compound, concentration, vehicle and study conditions.
Chelating: Binds metal ions that can affect product stability or appearance.
Skin conditioning: A broad cosmetic role for maintaining skin condition. It does not identify a particular clinical benefit.

Function definitions: PubMed: Gluconolactone as a polyhydroxy acid ↗ · European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Human topical research

A double-blind trial in 150 patients compared 14% gluconolactone lotion, 5% benzoyl peroxide lotion and the lotion vehicle. Both active lotions reduced inflammatory and non-inflammatory lesions, with fewer side effects reported for gluconolactone than benzoyl peroxide.

What this does not tell us

The abstract does not provide duration or numerical effect estimates. This older trial concerns a particular 14% lotion and cannot establish equivalent outcomes for a lower-strength cosmetic or other polyhydroxy acids.

Sources for this summary. PubMed 1303072 ↗

Research review checked Sep 30, 2026

Selected primary sources were reviewed for the existing research brief on 30 September 2026, with exact ingredient, route and combination limitations recorded. This was a bounded editorial review, not a systematic search.