Casting Creme Gloss is an ammonia free hair colourant that gives you a natural-looking colour with a rich glossy shine. Provides intense conditioning while coloring and covers grey hair up to 70%. Lasts up to 28 washes. Casting Crème Gloss is designed to enhance natural hair colour rather than to dramatically lighten or darken your hair. If the colour applied is darker than your natural hair colour, new growth at the root will appear more pronounced.