Wella Color Charm Permanent Liquid Hair Color Color Charm'sLiquifuse technology saturates, penetrates and fuses with the hair to deliver vibrant color that is exceptionally fade resistant"container-lg"> Here's how it works: Saturates: Color coupler molecules combine with color activator to form a gel. You can put it exactly where you want and it will stay there, saturating every strand of hair as you apply. Penetrates: The gel penetrates the hair shaft to deliver vibrant color molecules...