Hair removal cream is mainly composed of chemical ingredients, has a certain degree of irritation, so some patients may have contact dermatitis after one use, stimulation of the skin can cause the occurrence of allergic reactions, which can be manifested as localized itching of the skin, red rash. The main ingredient of depilatory creams is mercaptoacetic acid, the principle of which is to dissolve and corrode the hair through chemical substances to achieve the purpose of softening, thinning, brittle hair and shedding. However, depilatory creams can only temporarily remove the surface of the hair, but not really remove the hair follicle, so the hair can grow back again and again. Moreover, the shape of hairs is thin on top and coarse on the bottom. After removing the surface hairs, the newborn hairs will be coarser and the appearance may show more hairs than before. In addition, with repeated epilation, localized skin pigmentation may occur. Hair removal creams are more popular due to their ease of operation and the fact that they can remove hair by just applying them. However, in order to prevent the risk of allergy, it is recommended that when using hair removal creams for the first time, candidates should first use a small amount of the cream behind the ear or other parts of the body for a trial application, and then expand the application area if there is no allergic reaction. For permanent hair removal, laser treatment is recommended for safety and permanent hair removal.