L'Oréal Paris Prodigy 4.15 Frosted Brown is a permanent hair color that uses micro-oil technology for vibrant, natural-looking color without ammonia. It provides 100% grey coverage and enhances hair texture and shine. b Key Features Ammonia-free formulation Micro-oil technology for vibrant color Up to 100% grey coverage Improved hair texture and shine Easy to use at home Micro-Oil Technology, Ammonia-Free, Colorant, Developer Cream Emulsion, Satin-Care, Perfectionist Spatula, Instruction Leaflet, Gloves.L'Oréal Paris is renowned for innovative hair color solutions, offering ammonia-free options with micro-oil technology for vibrant, natural-looking results.Mix the color cream and developer emulsion in a 1:1 ratio. Apply to dry hair and leave for approximately 30 minutes before rinsing.Perform a patch test 48 hours before use. Not suitable for children under 12 years. Wear gloves during application to protect your hands. Keep out of reach of children. Avoid shampooing for 24 hours after dyeing to ensure color sets properly.