Redken Cerafill Defy Conditioner is a strengthening conditioner for normal to fine hair that strengthens the hair fibre while preventing its breakage. Adds body and shine. Perfect for coloured and chemically-treated hair too. Benefits Detangles and strengthens hair lengths. Beautifies fine hair. Technology Ceramide strengthens the hair fibre and prevents it from breakage. SP-94 nourishes the scalp and promotes a healthy environment for hair growth. Zinc PCA purifies the scalp. How to use After the shampoo, apply to your hair evenly and leave in 1-3 minutes. Rinse thoroughly.