I bought this shampoo and conditioner because I just did a Brazilian smoothing and instructions said I had to use a salt-free shampoo to prevent the keratin treatment is stopped prematurely. These products are therefore without salt or sulfate. I do not know exactly what it means, but they feel good and nickel works, so I'm very happy. The shampoo is silky and conditioner to the rich and nourishing air. The small pump as tip is also very practical in the shower. I will use this product every time now.
