I bought this product on the recommendations of the comments. I just made a Brazilian smoothing and wanted a shampoo without sodium laureth sulfate. Apparently it's beautiful hair, it is compatible ect ... But the big surprise arrival of the package! It contains a derivative product, which is just as harmful for smoothing, sodium lauryl (or laureta) sulfate ... In short, very disappointed, product return, refund and buy another shampoo in pharmacy (cheaper, home bioderma). In so avoid after smoothing!
