The Chroma ID 9.5-1 Polar Mask allows you to enhance and maintain your blond hair in a single step. This treatment counteracts yellow highlights on light, silver or gray blonds to keep the blond bright. The Chroma ID masks allow for unlimited creation of pastel tones by mixing the pigmenting masks with the shine mask. They can also be mixed together to create new shades for a bold, 100% customized look. This treatment has built-in Bond Strengthening Technology that strengthens hair and conditions the hair fiber. It includes Keratin and Panthenol to provide deep conditioning and seal the outer cuticles This treatment has a reduced sodium content that ensures maximum pigment deposition and better penetration for intense color. Depending on the shade, application time and tone height, the color can last from 5 to 12 shampoos. Its 500ml format with its dispenser pump is ideal for a treatment in a hair salon. USING ADVICES : Apply the 9.5-1 Polar Mask evenly to washed and towel dried hair. Leave on for 3 to 15 minutes and always check visually during the application time.