After getting keratin done, it is extremely important to pick the right shampoo otherwise the keratin process can be undone by certain chemicals. Some shampoos can’t be used when having keratin treatment done because it can damage the hair and wash out the keratin. Here are some ingredients to avoid:

Sodium chloride
Sodium chloride is the fastest way to remove keratin from your hair as it strips the hair of the keratin very quickly. In simple terms, sodium chloride is essentially salt. Sodium Chloride actually causes your scalp to dry out and get irritated. It also removes essential oils and natural moisture created by your scalp. In order to ensure long lasting results of your keratin treatment, you must use a sodium chloride-free shampoo.

Parabens
Parabens is another element to avoid when having the keratin treatment done. It is a common preservative added in beauty and care products. However, shampoos that contain paraben should be avoided due to health reasons. Some types of parabens can attach themselve to the oestrogen hormone in your body therefore causing a low level of oestrogen which can potentially develop into breast cancer. Research shows that paraben is present in some breast cancer tumours, though the relation between the two is unclear, it is safer to avoid it altogether.