kerastase bain chronologiste regenerant shampoo 8.5 oz kerastase bain chronologiste regenerant shampoo 8.5 oz a concentrated revitalizing shampoo. helps cleanse scalp impurities while revitalizing hair. contains abyssine, a precious and powerful molecule that regenerates scalp and boosts hair fiber. blended with vitamins a and e for anti-oxidant, color and uv protection. infused with a trio of ceramides to strengthen hair fiber. leaves hair soft, smooth and shiny. perfect for all hair types.