Matrix - Biolage - Dark Envy Red Neutralization Mask - 500ML

Shampoo. Rinse. While wearing gloves, apply to wet hair avoiding scalp area. Process up to 5 minutes, depending on desired cooling effect. Rinse thoroughly. Style hair as usual. Use weekly. Designed for levels 1-4, Dark Envy should not be used on white or grey hair as it can cause this hair to take on a greenish hue. This also includes any hair that has been lightened to level 5 or lighter with color, lightener or the sun. Using the Dark Envy Shampoo and Mask- Results may vary depending on the porosity of hair. Always wear gloves & avoid the scalp as it can potentially cause staining