Covers Stubborn Grey: Indian and Asian hair is more difficult to colour because the cuticles are thick, hard and round, and they are densely packed. This formula causes the cuticle to lift, and then penetrates, allowing grey to be gently yet fully covered.Gentle: Patented no peroxide and no ammonia formula make it the gentle haircolour. Its innovative formula uses oxygen in the air to activate it and get rid of grey. So gentle, no need to use a conditioner. Will not cause hair loss due to hair damage or breakage.Easy: No mixing, no mess. Premixed formula just squeezes out of tube into unique comb applicator. Just comb in, then rinse. Takes only 10 minutes.