The most important thing you can do is use the appropriate aftercare product line that our salon or stylist offers. The more often you wash your hair, the less time your treatment will last so you may want to try to wash your hair around 3 times per week if possible. One of the important after care pointers is to avoid sulfate-free and sodium chloride shampoos and conditioners as keratin is actually broken down by sulphates in shampoo quite quickly.