The six measurable markers that separate a glycolic acid body lotion that resurfaces skin from one that only softens: named concentration, working pH, barrier support, fragrance-free base, defined mechanism, and traceable manufacture.
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Keratosis pilaris is genetic, common and harmless, and it will not scrub away. Here is what it actually is, what the evidence supports, and the four levers that change how it looks.
The right body lotion is rarely the one with the loudest claim, or the highest number. It is the one that meets the six measurable markers that decide whether an acid actually changes body skin.
Body skin is not a bigger face. The complete reference on what glycolic acid does below the neck, how to judge a formula, and where the evidence is firm and where it is inference.
Six body-skin concerns, read the way a formulator reads them: the mechanism underneath, the markers that decide whether a lotion works, an honest timeline, and the point where the answer is not an acid at all.
Every viral body acid spawns a hundred cheaper lookalikes. Most copy the number on the bottle and little else. Here is the four-part test that separates a genuine equivalent from a near miss, and why the headline percentage was never the whole story.