Schwarzkopf Igora Zero Amm 10-2 Ultra Blonde Ash Permanent Color Creme No Ammonia 2 Ounce 60 Milliliters Provides perfect results with the unique combination of Color Cream and Color Care Developer for brilliant color performance. Color equalization. Long-lasting color with outstanding gray coverage. Fade-resistant formula with brilliant shine. UV protection. Mixes twice as fast compared to other brands. Usage of color: Mixing ratio 1:1 Apply on dry hair. Allow developing for 30 - 45 minutes. Use 3% Color Care Developer when coloring darker. Use 6% Color Care Developer for tone-on-tone, 1 tone lighter or coverage. Use 9% Color Care Developer for coloring 1-2 tones lighter. Use 12% Color Care Developer for coloring 2-3 tones lighter. For faded color or on previously tinted hair follow dual application with diluting color with water or conditioner for mid to ends hair shaft Additional heat is optional and reduces the developing time by a third. Provides perfect results with the unique combination of Color Cream and Color Care Developer for brilliant color performance. Color equalization. Long-lasting color with outstanding gray coverage. Fade-resistant formula with brilliant shine. UV protection. Mixes twice as fast compared to other brands. Usage of color: Use 3%, 6%, 9%, or 12% developer Mixing ratio 1:1 Apply on dry hair. Allow developing for 30 - 45 minutes. Use 3% Color Care Developer when coloring darker. Use 6% Color Care Developer for tone-on-tone, 1 tone lighter or coverage. Use 9% Color Care Developer for coloring 1-2 tones lighter. Use 12% Color Care Developer for coloring 2-3 tones lighter. For faded color or on previously tinted hair follow dual application with diluting color with water or conditioner for mid to ends hair shaft Additional heat is optional and reduces the developing time by a third.