Crazy Colour semi-permanent hair colours are great for use on all hair types. Crazy colour Marshmallow is a new pastel shade of pink from crazy colour gives your hair an almost baby pink look with a hint of purple. It works best on bleached hair, we don't recomend it for natural hair, the colour is so light that it just won't show up on darker hair. Completely cruelty-free & vegan-friendly. Why use Crazy Colour?