Salon Tech Progressive Keratin Shampoo 250ml - Progressive Keratin Shampoo is a specially designed formula that allows Keratin to deeply penetrate and moisturize hair cuticles. This neutral base shampoo gently washes away impurities while prolonging the life of the treatment. What’s this Keratin Straightening System all about? - It is the ultimate hair straightening solution. It straightens hair by penetrating keratin deep into the hair cuticles with the help of a flat iron. Therefore, frizz is eliminated and hair strands are solidified. This innovative treatment not only makes hair more manageable, but also adds moisture thus leaving hair softer, smoother and more radiant. What results can the client expect after the treatment? - Hair will be easier to manage and require less styling time. It will be significantly softer, straighter and shinier. The hair will be in an overall healthier condition. extend the lonevity of the keratin treatment. post treatment. neutral shampoo.