Joico Colour Endurance Leave In Protectant is suitable for Dry, Very Dry or Colour-Treated Hair. Joico Colour Endurance Leave In Protectant is a foaming Protectant that helps to guard against thermal styling damage, UV rays and colour loss. Joico's Leave In Protectant aims to lock in moisture and lock the cuticle to seal in the colour. Using the Joico Colour Endurance Leave In Protectant will help to make the hair shinier, healthier and gain body and bounce