This great, highly concentrated product is designed to smooth your hair, leaving it incredibly smooth and supple. Philip Kingsley Elasticizer even has an added sunscreen protection. It is super moisturising and highly concentrated, smoothing each strand to incredible silkiness. Its elasticising effect improves suppleness, stretchability, strength and shine whilst leaving your hair softer, less brittle, beautifully manageable and lustrous. Elasticizer is the weekly thirst quencher your hair needs to beat dryness. Directions of use: Before shampooing, wet your hair thoroughly. Apply Elasticizer in sections throughout your hair. Work in with your fingertips, especially at the ends. Leave in for 2 to 3 minutes. Rinse thoroughly. Shampoo and condition as normal. For very dry or damaged hair, cover your hair with a plastic cap after applying the Elasticizer and leave it in for 10 minutes.