What this site is for
It exists to separate what is established about collagen-stimulating injectables from what is claimed, and to grade each honestly rather than dismissing the category or endorsing it. That is why every claim is placed in one of four groups, why the materials are described as the different things they are, and why reversibility is treated as the central fact rather than as a footnote.
What it deliberately does not do
It does not recommend for or against a treatment, and it does not invite a reader toward an assessment or a consultation. It is not a booking page and it offers no service in relation to anything it describes. It names no brand and no manufacturer, quotes no prices, and does not present a material as producing a younger face on the strength of a marketing sentence.
The facts kept visible
Three facts are repeated wherever they are relevant. A tissue response is established and how much it shows is not. The strongest approval covers facial fat loss after an illness rather than general rejuvenation. And nothing reverses these materials, which is what makes the decision different in kind from a decision about a filler.
How the content is reviewed and corrected
Ke He, MD, Deputy Director and Head of Skin & Laser Aesthetics, is the responsible physician. This subject moves on a faster clock than most, because materials are launched with a collagen claim attached long before the studies that would test it exist, so the review is dated and revisited on a short cycle. If you find something unclear, out of date or wrong, the contact page explains how to tell us, and the correction is made to the page itself.