When determining whether to use semi-permanent, demi-permanent or permanent hair color, what you have to remember is that the basic difference between them is the level of penetration into the hair shaft. A true semi-permanent color sits in the cuticle, is not mixed with an activator, contains no ammonia and lasts four to six shampoos. They are excellent for shine, and a great way to try out a new tone. Demi-permanent color sits in and under the cuticle, is mixed with an activator, contains no ammonia and lasts 18 to 20 shampoos. They are ideal for toning, changing tone and going darker. Permanent color sits under the cuticle and inside the cortex, is mixed with an activator and removes natural pigment, even when going darker. Permanent color is essential when going lighter, covering gray and intensifying tone.
Talk to our color professional today to find out which coloring method is the best for you.