I gave 4 stars to the quality because I tried a new treatment with Nashi, an Italian product with argan oil. I still can't say whether it has an effect or not, because I need about 3 treatments, which are done once every 3 months, I will give a review at the end of this treatment. What I want to mention is that the oil that used it at the end smells very nice. The girls are all very welcoming and nice.