Davines NaturalTech Tailoring Strength Base 4 Serum for Damaged Hair is best for fragile and damaged hair. Glucoside chemistry has fostered the STRENGTH BASE. Sugar based ingredients are used with a different purpose in the cosmetic field but a new application has been recently studied. A new molecule coming from sugar is able to penetrate the fibres allowing the hair to be repaired. Featuring a STRENGTH COMPLEX, specifically designed to penetrate deep into the cortex to create new bonds. It supports the damaged internal keratin structure and strengthens the hair fiber.