+22 Difference Between Semi And Demi Hair Color References. In this article, we’ll go through exactly what each type is, and why you would use them, with tips from our colorists to help you get the best results from your new shade. Semi will stain the outer layer of the hair and depending on the composition of the hair, it made be unpredictable when applied or during its fading.
Web how long it lasts: The color coats the outside of the hair and doesn’t change the color as much as it changes the tone. Both mean the hair dye has some level of permanence to it.
