So let me tell you about this product, it's amazing. Smells great. Makes hair look so healthy and thick when used for a good amount of time. But the downfall to it is, it's like crack for the hair. When you stop using the product, your hair will begin to dry and feel brittle. It feels as if you were swimming everyday for the whole summer and the chlorine plus sun damage took its toll or if you curled your hair or straightened it for so long and the damage begins to show. When my hair stylist asked what I was using, she told me those were the effects to some people's hair. I used to love this line product but stopped buying the shampoo, conditioner, and the serum all together after my hair became dry because it is not sold in Mexico when I stayed an extended amount of time.