Glycolic Acid sits in our formulas for one job: refining the feel and look of texture. We file it under Smoothing in this glossary because that is the effect its evidence actually supports, not because it is the most flattering label available.

Radiance in the surface

The mechanism is the one stated in the summary above, and we have deliberately not extended it. Where a supplier or a competitor would reach for a bigger promise, the sentence we publish stops where the research stops.

Radiance in the evidence

Our source is a peer reviewed randomized controlled trial, recorded as Thibault 1998 PMID 9598014. You can read it yourself at PubMed 9598014. We grade that as solid support for what the ingredient does.

Radiance and its limits

The research behind Glycolic Acid studies the ingredient, not the finished Opuliss product it sits in. It supports what Glycolic Acid does. It is not a trial of our formula, and we will not present it as one.

Cosmetic claims describe how skin looks and feels. Nothing here is a medical claim, and nothing here treats a condition.