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Zinc PCA

ZINC PCA

An oil-regulating helper — zinc bound to a natural hydrator, with modest direct evidence.

humectantskin conditioningCAS 68107-75-5 / 15454-75-8

Why it works

Combines zinc's mild sebum-regulating and antibacterial properties with PCA, a component of the skin's natural moisturizing factor. In-vitro work shows reduced sebocyte activity; small human studies suggest less surface oil and shine.

Concentration matters

Typically 0.1–2% as a supporting ingredient.

The evidence, by concern

Oiliness

Early evidence

Small studies suggest modest shine reduction

How sure are we
early
How much it helps
subtle
Do studies agree
mostly agree

A few small studies — some manufacturer-run — found zinc PCA formulations reduced sebum and shine over 4–8 weeks, consistent with zinc's known biology. The trials rarely isolate the ingredient. A reasonable supporting act for oily skin, not a headliner.

The receipts

5 trials/reviews indexed · showing most cited

Safety, without the fear

Anchored to regulatory assessments — not hazard lists. Dose makes the poison; these are the conclusions at real-world cosmetic use.

Editor's note

Well tolerated at cosmetic concentrations; no notable safety flags.

CIR · Cosmetic Ingredient Review

CIR concluded PCA and its salts, including zinc PCA, are safe in current practices of use.

Source →
Spotted an error, or a study we missed? Claims were fact-checked against the cited literature in August 2026; independent clinical sign-off is pending — corrections welcome.
Zinc PCA — evidence, studies, safety — Evidently