Revlon Colorsilk #37 Dark Golden Brown is a permanent hair color that provides 100% gray coverage and leaves hair looking healthy and vibrant. This hair color is enriched with nourishing silk proteins that penetrate every strand to make hair smooth, shiny, and soft. The formula is ammonia-free and contains UV defense to protect hair from the damaging effects of the sun. With its easy-to-use, drip-free formula, Revlon Colorsilk #37 Dark Golden Brown gives you long-lasting, natural-looking color that you can enjoy for up to 8 weeks