What Is Demi Permanent Hair Color Vs Permanent. Demi permanent hair color is ammonia free so its molecules get under the outer cuticle of the hair shaft but unlike permanent dye doesn t penetrate the strand. Instead they wrap around the hair s cuticle creating a coating of color that s gradually washed away.
Unlike demi permanent hair color semi permanent hair color is a deposit only formula and won t require a developer or any level of peroxide clarifies dove hairstylist cynthia alvarez. Semi permanent hair color is less damaging on the hair however it does not last as long as demi permanent hair color. Demi permanent hair color is ammonia free so its molecules get under the outer cuticle of the hair shaft but unlike permanent dye doesn t penetrate the strand.
Both demi permanent and semi permanent hair color dye can be applied at a salon or at home.
Instead they wrap around the hair s cuticle creating a coating of color that s gradually washed away. Demi permanent hair color is ammonia free so its molecules get under the outer cuticle of the hair shaft but unlike permanent dye doesn t penetrate the strand. The are two main differences between demi and semi permanent hair color. The color coats the outside of the hair and changes the tone rather than the color.