Incredible What's The Difference Between Semi And Permanent Hair Color References. It contains lower levels of chemicals, such as peroxide or ammonia. It contains more chemicals, along with peroxide.
(without these active ingredients, the hair color will not penetrate the cuticle and change its structure for long. In contrast to permanent colour, demi sits on the surface of your hair follicle, meaning it doesn’t allow the colour to really get in. How long does a permanent hair dye last?
