This preshampoo removes minerals for a beautiful hair color in just 1 to 3 minutes. The groundbreaking technology of Dream Filter is an industry first. The unique spray acts like a magnet to remove metals and minerals from the hair in less than three minutes, without the need for heat, cap, or complicated mixing. The unprecedented combination of two molecular filters and two polymer filters gently, safely, and quickly removes minerals that distort the color and texture of the hair. The spray works on all hair colors and types, making a visibly noticeable difference on lighter hair and highlights that are more susceptible to darkening and discoloration.