Colorsilk is ammonia free permanent hair colour for enriched with silk proteins to help leave hair in better condition. Achieve 100% gray coverage in the comfort of your own home This specially blended, permanent hair-colour formula includes Revl0n 3D colour gel technology, which delivers rich, multidimensional colour that’s both natural looking and long lasting Multi-tonal colour, giving your hair definition and dimensionality from root to tip Colorsilk with keratin formulated with UV defense system