Did you know that your shampoo must be slightly acidic(pH 4.5-5.5)?
A Thread

This is the isoelectric point at which the keratin protein is completely discharged and neutral (not negatively or positively charged).
Alkaline products cause the scales of the cuticle to open...

....exposing the inside of the hair shaft (cortex). Ordinary water is already alkaline enough to open the cuticle of the hair, an alkaline shampoo opens it even more.

You need a slightly acidic shampoo to close the cuticle of your hair and return it to its natural state, making the hair shiny and smooth. Vidorck’s Range is Specifically Formulated to meet these Specifications.