What Is Permanent Hair Dye. Permanent dyes don t have to be applied as often as semi permanent or temporary colors. People are also advised to allow several weeks to lapse between the application of perms and permanent hair color.
To start with the very obvious permanent hair dyes last longer than semi permanent types. They are the most popular types of hair dyes because the color changes last until the hair is replaced by new growth. These dyes do penetrate into the hair shaft.
To start with the very obvious permanent hair dyes last longer than semi permanent types.
Permanent hair color lasts until the hair falls out or you cut off the colored portion. Permanent hair color lasts until the hair falls out or you cut off the colored portion. Permanent hair dyes are also known as oxidation according to cuannane phillips. These dyes cause lasting chemical changes in the hair shaft.