BIOLAGE Advanced addresses hair's most distinct needs through an effective blend of botanicals and molecular science. A restorative breakthrough. BIOLAGE Keratindose formulas with pro-keratin and silk provide targeted reinforcement and moisture balance to overprocessed hair. Damaged, over-processed and unconditioned hair can feel brittle, lacking manageability and shine. The hunt for luscious, healthy hair is over with BIOLAGE Keratin Conditioner, formulated with Pro-Keratin and silk.