Revlon Color Silk Beautiful Hair Permanent Hair Color Color 27 Deep Rich Brown 1 Ct. The ammonia-free hair color delivers 100% 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, Color Silk ammonia-free formula leaves your hair in better condition than before you ever colored it