I purchased the Davines Nounou pak after having a treatment done on my thick hair. I was told to use the pak once a week in conjunction with the conditioner and shampoo...I did so for two weeks until my hair started drastically falling out. I only realised it after my hairdresser pointed it out and I stopped using the products. I knew it must have been the products because after I switched back to my normal shampoo, my hair did not fall out .My hair is now considerably thinner and less and I'm on daily vitamins to rectify the situation. Maybe it was just my type of hair that had reacted, but I would personally not recommend this product to anyone. It is also quite expensive.