User:Hairdye

Types of Haircolor Temporary - color lasts from one shampoo to the next and is deposited on the outside of the hair shaft. Semi-Temporary - color lasts up to 4-6 shampoos. Semi-Permanent - color is for masking white or light hair and lasts 2 to 6weeks. Permanent - color formulas change the natural hair color. They require maintenance to new hair growth after 2 to 4 weeks. (For the purposes of this guide we will be discussing Permanent colors and methods of processing only.) How it Works Before any permanent color can be deposited into the hair shaft, the cuticle, or outer layer, must be opened. The insoluble formula then reacts with the cortex, or middle layer, to deposit or remove the color. The color is available in a variety of forms; creams, gels or tubes, or shampoos. These will not permanently change the hair color until they are part of an oxidation chemical reaction. The Oxidizing Agent or Developer is hydrogen peroxide in one of various forms and strengths. lt is the catalyst or cause of the chemical reaction which allows the formula to permanently alter the hair's color. The strength of the developer - is determined by the desired results and the manufacturer's directions. 10 Volume - Color deposit with only slight lightening. 20 Volume - Maximum color deposit as for gray or white hair with lightening 30 Volume -. Strong lightening action with less color deposit. Bleaching Boosters - can be added to increase lifting action. Consult manufacturer's instructions . Too much developer and the color may not have good highlights, cover poorly, not lift to the correct level and fade more quickly