A powerful strengthening shampoo that promotes robust hair growth from the roots. This innovative formula, known as Kerastase Bain Extentioniste, is specifically designed to address weakened hair prone to breakage. The shampoo works by rebuilding and sealing the hair's internal structure, providing enhanced protection throughout its growth cycle. The Kerastase Bain Extentioniste strengthening shampoo targets the hair at its foundation, nourishing the scalp and fortifying each strand from within. By strengthening the hair fibers, it helps reduce breakage and split ends, allowing for longer, healthier-looking hair. This specialized formula is particularly beneficial for those experiencing thinning or fragile hair, as it helps to improve overall hair density and resilience. Available in a convenient 500ml size, the Bain Extentioniste shampoo is formulated with key ingredients that work synergistically to support hair health. These include Creatine R™, which reinforces the hair's internal structure, and Ceramides, which help to seal the hair cuticle for improved protection against external aggressors. Regular use of this strengthening shampoo can lead to visibly stronger, more resilient hair that is better equipped to withstand daily styling and environmental stresses.