Infused with Aloe Vera & Passion Fruit extracts, the Matrix Biolage Hydra Source Mask works to deeply nourish & condition the hair to leave it silky soft & 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 & 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.