Infused with Aloe Vera and Passion Fruit extracts, the Matrix Biolage HydraSource Mask works to deeply nourish and condition the hair to leave it silky soft and supple. Designed with a lightweight, lavish formula, it's a must have for protected, hydrated hair. K.d. Directions for use: After Matrix Biolage Hydrasource Shampoo, massage Matrix Biolage Hydrasource Mask into wet hair and leave in 3-5 minutes. Rinse. Use once or twice weekly in place of Matrix Biolage Hydrasource Conditioner. In case of contact with eyes, rinse them immediately.