A 24-year-old female asked:
Is it bad to use dry shampoo if you never want to wash your hair?
1 doctor answer • 2 doctors weighed in
Preventive Medicine 42 years experience
Water IsEssential to: clean. Shampoo, like other soaps/detergents, does not clean. They are emulsification agents which can coat groups of fat molecules at a submicroscopic scale, so that fat molecules (water rejects) will now mix (via the charged surrounding soap molecules) with water & wash away. This is also why physical agitation is essential; it breaks up fat, & other molecules, so the soap molecules can cover.
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3.7k viewsReviewed >2 years ago
Last updated Mar 13, 2015
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