Rule 6: Do Damage Control Before You Dye
"A good thing to do the day before coloring is to use a clarifying shampoo to remove any product buildup, and to help even the hair's porosity so color takes evenly," says White. "You should follow that with a deep conditioner to replace any moisture that may be lost during coloring."
But skip shampooing the day you dye your hair. "Shampoo doesn't make the color take better," says Rhys. Additionally, by not shampooing before you color, you're allowing the natural oils in your hair to protect your scalp from the irritation that can be caused by the ammonia in many dyes.
By: Daily Glow