Elasticizer Deep-Conditioning Treatment delivers a super-charged boost of elasticity, moisture and strength to your hair. Philip Kingsley's award-winning, pre-shampoo, nutrient-rich formula helps to reduce the likelihood of breakage, leaving hair bouncy, silky, shiny and manageable without weighing hair down. Apply pre-shampoo and then wash out. Before shampooing, thoroughly wet hair and apply in sections. Work into hair with fingertips. Cover with a shower cap and leave for at least 20 minutes (preferably over 60 minutes). Rinse well and follow with the appropriate Philip Kingsley shampoo, conditioner and scalp toner.