Why are tattoos permanent?
Chemistry For Your Life
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What Is a Suspension?
In a suspension, the solid is still intact. There's groups of molecules together, still in their solid form. It lasts for a long time as long as there's enough liquid to keep it dissolved in. The fda doesn't regulate pigments in tattooing, which is wild because they regulate pigment in cosmetics. Tattoos are permanent, and cosmetics are not, right? Dang.
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