Hair coloring Human hair color

a hairdresser colors client s hair.

hair color can changed chemical process. hair coloring classed permanent or semi-permanent .

permanent hair color means hair s structure has been chemically altered until cut away. not mean synthetic color remain permanently. during process, natural color removed, 1 or more shades, , synthetic color has been put in place. pigments wash out of cuticle. natural color stays in longer , artificial fade fastest (depending on color molecules , form of dye pigments).

permanent hair color gives flexibility because can make hair lighter or darker changing tone , color, there negatives. constant (monthly or six-weekly) maintenance essential match new hair growing in rest of hair, , remedy fading. one-color permanent dye creates flat, uniform color across whole head, can unnatural , harsh, in fair shade. combat this, modern trend use multiple colors—usually 1 color base added highlights or lowlights in other shades.

semi-permanent color washes out on period of time—typically 4 6 weeks, root regrowth less noticeable. final color of each strand affected original color , porosity, there subtle variations in color across head—more natural , less harsh permanent dye. however, means gray , white hair not dye same color rest of head (in fact, white hair not absorb color @ all). few gray , white hairs blend in sufficiently not noticeable, become more widespread, there come point semi-permanent alone not enough. move 100% permanent color can delayed using semi-permanent base color, permanent highlights.

semi-permanent hair color cannot lighten hair. hair can lightened using chemical lighteners, such bleach. bleaching permanent because removes natural pigment.

rinses form of temporary hair color, applied hair during shampoo , washed out again next time hair washed.