The most common fear about acids is that they wear the skin away. On the body, the evidence points the other way: what thins is the dead build-up on top, while the living skin beneath grows measurably thicker.
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Skin cell turnover is one of the most important concepts in body skincare. Understanding how skin renews itself can explain why roughness, bumps and uneven texture develop and what influences smoother looking skin.
Softer by morning, visibly smoother within days, and it keeps improving for weeks. How fast a 12% glycolic acid body lotion really works on keratosis pilaris and strawberry legs, and why the early result is the one that lasts.
A firming lotion and a body scrub can both leave skin feeling lovely by morning. Whether that feeling is still there on Thursday is the only question worth asking.
More acid is not more progress. There's a point where exfoliation stops renewing skin and starts wearing it down, and the skin has a clear way of telling you that you've reached it.
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A self-tan and a glycolic acid lotion want the same few layers of skin. Understand that, and the patchy fade, the streaks and the timing stop being mysteries and start being choices.