shampoo for after keratin treatment
I use Deva Curl products, which I love, however the salon where I get my done with the keratin conditioning treatment says there is an ingredient in Deva Curly that makes it wash away faster. They are well aware that there are no sulfates or sodium chloride in these products. But they were told from another source that there is something else in the ingredients which causes it to fade faster. Does anybody know about this? I am still using Deva curl until I know for sure.