This improved formula rebuilds and strengthens the hair fibre at all levels of hair erosion. Smoothes and protects the surface while reconstructing the hair fibre intensifying its strength from root to end. Bain Force Architecte contains Complex Ciment-Cylane (3) which provides the ultimate in hair fibre reconstructing technology.To use: Apply a small amount to wet hair and scalp. Massage head using palms of the hands, Emulsify and rinse thoroughly.For ultimate results pair with Kerastase Ciment Anti-Usure or Masque Force Architecte as a nourishing treat, and Fibre Architecte serum as a leave-in daily hair protectant.Today, more than ever, the world needs care responsible and sustainable care. Since 2013, Krastase has resolved to extend its expertise in the art of care by committing to using less virgin plastic. Drawing on their excellence in innovation, finding new ways to cut down on waste and empower their customers to make more sustainable choices.Krastase is committed to optimising packaging whenever possible, using less virgin materials and more recycled materials, recyclable packaging and refillable delivery systems. Beginning with shampoo bottles and branching out to more and more products, they are creating a sustainable packaging program, with many more refill innovations to follow.Krastase is also committed to more sustainable production and since 2019 their factory in Burgos, Spain has achieved carbon neutrality by improving energy efficiency and using 100% renewable energy. Since 2017 the Burgos production facility has also been a waterloop factory. This means that 100% of the water used for production processes is recycled and reused in a closed loop. The External water network is only used in the composition of the products or for employees day to day needs.