Product Build-up is the residue of styling products and two in one shampoo formulation left on the hair shaft.
Causes of Product Build-up
When these residues combine with mineral deposits in the water, a build-up occurs preventing thorough cleansing and conditioning. The result is hair that is dull and lacks lustre, it is often difficult to perm or colour successfully because there is a barrier preventing the chemicals from penetrating the hair shaft. The color can be patchy and the perm result uneven.
Product Build-up Solutions
Use one of the stripping, chelating or clarifying shampoos, which are specially designed to remove product build-up. This is particularly important prior to perming or coloring.