Details Enhances natural color and refreshes color-treated hair Intense gray coverage for up to 50% gray hair Better hair results vs. relaxing alone Lasts for up to 12 shampoos Relax and color same day Clairol Professional Beautiful Collection Advanced Gray Solution Semi-Permanent hair color has no ammonia, no peroxide and is gentle enough to be used right after relaxing. With Advanced O2 Technology, this hair color provides intense gray coverage and works as a refresher for permanent hair color by adding luster to dull-looking hair. Advanced O2 Technology uses oxygen in the air to develop the color vs. heat or hydrogen peroxide. The end result is shiny, moisturized color with gray coverage that lasts up to 12 shampoos. " Directions Application: Apply directly from the bottle generously and thoroughly to shampooed and towel-dried hair. Timing: Process 25 minutes at room temperature. Use of heat is not recommended. Rinse well. Do not shampoo Pro Tips All Advanced Gray Solution shades are intermixable for custom colors. No developer is used with Advanced Gray Solution shades. Be sure hair is thoroughly rinsed and shampooed per relaxer directions before applying any Beautiful Collection Advanced Gray Solution shade. To brighten your natural hair color, select a shade 1-2 levels lighter. Maintain and extend the life of your color with Clairol Professional's iThrive Color Vibrancy Care System. Ingredients WATER/EAU, UNDECETH-3, PROPYLENE GLYCOL, ETHANOLAMINE, OLEIC ACID, GLYCOL DISTEARATE, CETEARYL ALCOHOL, TOLUENE-2,5-DIAMINE SULFATE, COCAMIDOPROPYL BETAINE, RESORCINOL, FRAGRANCE/PARFUM, 4-AMINO-m-CRESOL, 4-AMINO-2-HYDROXYTOLUENE,