In a coloring bowl, mix the American Crew Precision Blend color with the 4.5% developer at a ratio of 1 + 1. About 20 ml are needed for hair 2.5 cm long.
1 tube = 40 ml = 2 applications on short hair or 1 application on long hair.
Developer at 4.5% - 15 vol. - 450 ml (11 to 22 colors).
Mix 1 + 1.
Break time: 5 minutes.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.