Hair removal as a form of payment for challenges or dares lost involving the removal of all body hair. Inmates have their head shaved upon entry at certain prisons. Depilation is the removal of the part of the hair above the surface of the skin. The most common form of depilation is shaving or trimming. Another option is the use of chemical depilatories, which work by breaking the disulfide bonds that link the protein chains that give hair its strength. Epilation is the removal of the entire hair, including the part below the skin. Methods include waxing, sugaring, epilation devices, lasers, threading,
Hair straightening Relaxers and the other methods permanently alter the structure of the hair, although new hair growth is not affected. The drug interferon alpha has been reported as being shown to modify hair follicles causing permanent change in a person's hair texture. Chemical hair straightening uses chemical substances to break disulfide bonds, also called an S-S bond or disulfide bridge, in the hair shaft. There are several ways of permanently straightening hair. The main methods used today are: This is a temporary straightening method that originated in the Dominican Republic. The technique spread to the United States where it was popularized