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 coloring achieve. Demi-permanent hair colors are not permanent but the darker shades in particular may persist longer than indicated on the packet. Semi-permanent hair coloring involves little or no developer, hydrogen peroxide or ammonia, and is thus less damaging to hair strands. The reduced amount of developer, whether peroxide or ammonia, means that hair previously damaged by applying permanent color or permanent reshaping is less likely to be damaged during the color application process. Semi-permanent hair color uses compounds of lower molecular weight than are found in temporary hair color dyes. These dyes penetrate the hair shaft only partially, because of