The main component of vinegar is acetic acid, which has a strong bactericidal effect and can protect skin and hair. In addition, vinegar is rich in calcium, amino acids, vitamin B, lactic acid, gluconic acid, succinic acid, sugar, glycerol, aldehydes and some salts, which are extremely useful for the skin. Vinegar is a well-known condiment commonly used in families, and it is also a good product with many cosmetic effects. Vinegar contains acetic acid, lactic acid, amino acids, glycerol and aldehydes, so it has a mild stimulating effect on human skin, can promote blood vessel dilation, provide sufficient nutrition, make the skin plump, and can kill some bacteria on the skin and treat scabies.