How is it soap-free if it contains an alkaline agent?
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The key thing that makes something soap is having a polar head and a non-polar tail. These tails can surround a little bubble of oil and give it a polar outside, which lets it mix with and be washed away by water. Because NaOH on its own doesn’t have this lipid tail, a skin product containing it won’t strip all the oil from skin the way that products containing soap do
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