What this site is for
It exists to separate what is known about home beauty devices from what is claimed for them, and to grade each claim honestly rather than presenting the strongest interpretation the evidence will bear. That is why every claim is placed in one of four groups, why the delivered output is treated as the subject rather than the mechanism, and why the claims that come out as supported are mostly about safety and about the category being limited.
What it deliberately does not do
It does not recommend for or against any device or any brand, 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 does not name brands, does not quote prices, and does not tell a reader who has bought a device that they have been foolish. Most home devices are inexpensive and low-risk, and the error this review argues against is a claim being believed rather than a purchase being made.
The facts kept visible
Three facts are repeated wherever they are relevant. A consumer device is built so that misuse does not cause serious harm, and that same ceiling limits the effect. Clearance for cosmetic use is permission to sell rather than a finding that the effect is achieved. And there is no user dosimetry, so nobody, including the person holding the device, can say what dose a session delivered.
How the content is reviewed and corrected
Ke He, MD, Deputy Director and Head of Skin & Laser Aesthetics, is the responsible physician. This category moves quickly on the products and slowly on the evidence, so the review is dated and revisited on a short cycle rather than treated as a settled text. If you find something unclear, out of date or wrong, the contact page explains how to tell us, and the correction is made to the page itself.