The Matrix Instacure Build-A-Bond Liquid Mask is a high-performance treatment designed to rebuild and reinforce the internal structure of fragile hair. Its lightweight formula deeply nourishes, restores manageability and protects against heat damage and breakage — all without weighing hair down. Repairs hair bonds from within Strengthens and hydrates damaged strands Protects from heat styling Improves softness, smoothness and shine Ideal for weakened or chemically treated hair USE Apply to towel-dried hair after shampooing. Leave on for 5–10 minutes. Rinse thoroughly. For best results, pair with the Build-A-Bond Shampoo and Conditioner.