The rich and intensely nourishing emulsion contains keratin to fill the structural gaps in the outer hair layer as well as the cortex. The pH 4.5 Balancer Technology densifies the hair structure and locks in color pigments in the deepest layers of the hair; this improves the strength and elasticity of colored hair. The hair is brought to the optimal pH level of 4.5; the color effect remains as vibrant as on the first day until the next salon visit. Application: Apply to towel-dried hair and work in. For different neutralization results, leave the treatment in the hair for longer: • Light - 5 minutes • Medium - 7 minutes • Intense - 10 minutes. Rinse thoroughly.