A hair dye lightener and darkener.Create a lighter pastel look or a darker look; when mixed with any Good Dye Young Semi Permanent Hair Colour with the SemiPermanent Hair Colors Additives. Working to lighten or darken any of your colours are these nourishing; non toxic hair dye mixers that act like both a hair mask and mixing medium. Simply add to your colour and use as normal for a gorgeous pastel or grungey result. Enriched with sunflower extract and vitamins A; C and E to condition each strand as it works; it ticks all our boxes. Vegan Crueltyfree Free from paraben; ammonia; peroxide; bleach and phthalates