Revlon ColorSilk Hair Color, 42 Medium Auburn 1 ea is an ammonia-free hair color delivers 100% gray coverage. Achieve rich, long lasting hair color and a radiant shine at home. It delivers natural looking, multi-tonal color from root to tip providing definition and boosting your hair’s dimension. It is also enriched with keratin and silk amino acid, Color Silk's ammonia-free formula leaves your hair in better condition.