Journal · Page 2 of 9
How skin analysis actually works, what the data says about routines, and the decisions behind our privacy model.
Press one and nothing happens. That is not a technique problem — there is nothing inside to extract, because the bump is not a blocked pore. It is the gland itself, enlarged.
The letter categories every one of these pages quotes were withdrawn by the FDA in 2015 — and cosmetics were never in that system to begin with. Here is what the sources actually say, including where they disagree.
The figure every "men's skin" page opens with does not appear in any peer-reviewed source that can be opened — including a paper written specifically about male skin. What is different is the shave, and that changes the whole routine.
Two studies measured how much of the same peptide crosses the skin and disagreed by a factor of 136. That is the state of the evidence under the most-marketed ingredient class in skincare.
"Serum" is a viscosity band, not a strength rating — there is no technical or regulatory definition of it. Sorted by target instead, the categories separate sharply, and two of them have almost nothing behind them.
Almost no other active has evidence for acne, pigmentation and rosacea at once. But the reason it competes with hydroquinone turns out not to be effectiveness — and a higher percentage is not simply stronger.
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