The hotel has shower gel. Why is there soap? That soap is only used for washing hands.

Soap has better cleaning power than shower gel. Some customers like to use shower gel, while others like to use soap. In order to meet the needs of different customers, the hotel has prepared these two kinds. Is this not good?

However, the quality of soap prepared by restaurants is average, especially strong alkaline. Do not wash your face with it.

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.

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.

So it would be better to wash your face with weak acid soap.

This is the ph and acid-base test of soap that is often seen in the market. Black soap is alkaline and yellow soap is weakly acidic.