Used by professionals. Hydrology European Gentle Moisture Shampoo. Professionally formulated to bring you the science of moisture for healthier hair. Keeps your hair from drying out, whether you heat style, color, or just expose it to dry air. Contains the exclusive Hydratein Moisturizing Protein Complex. Infuses hair with Hydratein Moisturizing Protein Complex. Locks in moisture for healthier hair. For your hair type: Colored/highlighted. This product is not tested on animals.