A member asked:

Is soap more effective if it is in liquid or powder form?

A doctor has provided 1 answer

No: All soaps, powder or liquid, have a bipolar molecule with a water soluble group on one end and fat soluble on the other. Most persistent dirt is fat soluble, which binds to the fatty end of the soap, and the water soluble end carries it off. Powders and liquids vary in concentration and this may affect the power, but both act by the same mechanism.

Answered 3/13/2013

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