Kerastase Specifique Bain Prevention GL is a thickening shampoo that gives body and tone to fine and thinning hair. Stimulating the scalp to give volume, it boosts scalp micro-circulation on application and adds texture to the lengths. Using Systeme Glyco-Impulsion, the thickening Kerastase Bain Prevention GL soothes the scalp with Cooling Agents, nourishes at the root with Gluco-Lipids, promotes nutritional exchange and helps with the absorption of Proteins. The result when working together, leaves your hair looking and feeling stronger and healthier. Ideal for: Thinning & Hair Loss. Fine Hair. Specifique Bain Prevention GL Densifying Shampoo. 1000ml/34oz. Kerastase - Specifique. Hair Care. Kerastase.