Utilizing color theory, purple shampoo works by neutralizing ... Product on Amazon: Arvazallia Hydrating Argan Oil Hair Mask and Deep Conditioner for Dry or Damaged Hair (8.45 oz Jar ...
Color-depositing shampoos add specific pigments (either purple, blue or green) onto the hair shaft to maintain your desired color. Based on color theory, blondes should use purple shampoos ...