Soap is a widely accepted personal cleaning product, which has strong cleaning ability and low price, and has become a necessity in people's lives.
Soap is a basic salt with pH of 9.5- 10, which is composed of fat, oil (mainly vegetable oil) and salt. It is the simplest anionic surfactant, and it can be used to emulsify skin surface substances by forming soap salts to remove dirt.
Compared with soap, soap has low alkalinity, high fat content and less irritation to the skin.