KeraCare Intensive Restorative Masque is the ultimate treatment for weak and damaged hair. It actually fortifies hair so that it is 42% stronger! A specialized blend of fruit extracts work to enhance elasticity, helping the hair withstand styling without incurring further damage. When to use: Use as a deep conditioner for weak and damaged hair. Use to repair hair that has been damaged from frequent heat styling, chemical treatments or stressful styling practices. Use to strengthen hair.