The ingredient, explained

Hydroxypinacolone Retinoate

Hydroxypinacolone retinoate has been studied in multi-active acne gels.

RetinoidSkin conditioning

Ingredient guide

What it is and what it does

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

Retinoid: Vitamin A or a vitamin A-like compound. This is a compound category; individual retinoids have different research and uses.
Skin conditioning: A broad cosmetic role for maintaining skin condition. It does not identify a particular clinical benefit.

Function definitions: National Cancer Institute: Retinoid definition ↗ · 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 research on a combination

An uncontrolled pilot reported fewer lesions after twelve weeks.

What this does not tell us

Retinol and papain were also present; this does not establish independent HPR efficacy, and local irritation was reported.

Sources for this summary. PubMed 25876142 ↗

Research review checked Oct 1, 2026

Read exact local candidate abstracts first; select identity-relevant papers; targeted primary PubMed/publisher searches. This is not an exhaustive systematic review.