What is the PH value of human skin?

Because there are acidic substances such as urea, uric acid, salt, lactic acid, amino acids and free fatty acids on the surface of human skin, the skin surface is often weakly acidic.

(1) The surface ph of normal skin is about 5.0 ~ 7.0.

(2) The lowest can be 4.0 and the highest can be 9.6.

(3) The average ph of skin is about 5.8.

The ph value of healthy oriental skin should be between 4.5 and 6.5.

Only when the skin is in the normal ph range, that is, weak acidity, can the skin be in the best state of absorbing nutrients. At this time, the skin's ability to resist external erosion, elasticity, luster, moisture and so on are in the best state.