Schwarzkopf Professional BC Bonacure Peptide Repair Rescue Nutri-Shield Serum (28+28ml) is a double dose serum which improves manageability, strength and elasticity, providing total hair repair and UV protection. Formulated with Peptide Repair Rescue Technology, it refills gaps in the internal hair structure, smoothing surface irregularities and sealing the hair strands for brilliant shine and silky smoothness. \n \nDirections of use: \n• Pump a small amount into the palms, mixing the two phases together. Apply to towel-dried or dry hair and leave in.