The ammonia-free hair color delivers 100 percentage gray coverage. Achieve rich, long-lasting hair color and a radiant shine at home. Revlon’s 3D Color Gel Technology delivers natural-looking, multi-tonal color from root to tip providing definition and boosting your hair’s dimension. Now enriched with keratin and silk amino acid, ColorSilk’s ammonia-free formula leaves your hair in better condition than before you ever colored it.