Makeup Articles - ph of the skin

For decades, cosmetic manufacturers have done considerable research in order to discover and produce products whose pH is healthiest for the skin and the hair. The symbol pH is used in everyday language to represent the degree of acidity or alkalinity of a substance. When a solution is neither alkaline nor acidic, it is called neutral. For example, the pH of pure water, a neutral substance, is 7. If the pH of a solution is less than 7, it is acidic; if the pH is greater than 7, it is alkaline.\

The pH of healthy normal skin is between 5.2 and 6; that is, it is slightly acidic. This acidic pH of the skin is due to the presence of acids in the sebum, sweat, and keratin. It is necessary to maintain the acidity of the skin. This is, probably, the reason why it is thought that curds and lemon juice when applied would do wonders for your skin. This is also the reason why ordinary soaps (which are alkaline) have, rather erroneously, got themselves a bad name.