Wondermint is so fresh and so green. Chill out with a mint thats so fresh, it will make you wonder what you ever did without it. Good Dye Young's semi-permanent hair dye line combines salon-grade pigments with a nontoxic, conditioning formula that deposits ultra vibrant color. Semi-permanent hair dyes do not damage the hair, in fact theyre super conditioning! GDYs formula combines a high-quality cream base, like a hair mask with essential oil benefits. The color is deposited on top of the hair shaft and acts like a stain that will fade out over time each time you wash your hair. Color can last anywhere from 4-6 weeks. Please note that our semi-permanent dyes will show the best and most vibrant on platinum, level 10 hair. DISCLAIMER: All LIGHTER DAZE colors should be applied to pre-lightened level 10 (Platinum Blonde) hair to achieve the best results.