I purchased a very expensive Bio Ionic Nano i 5X hairdryer ($165) and also the diffuser ($25) that goes with it from Folica.com. The diffuser would not stay on the dryer due to some defect. I contacted Folica to get a new diffuser. After numerous conversations per email and telephone, they finally agreed to send me a new one. It's been 6 weeks and it never showed. I finally contacted my credit card company and asked them to deal with it and credit my card for the amount. This was an immensely frustrating experience, especially when you spend that amount of money. You expect it will be right or at least be made right. I'm currently searching for a diffuser that will fit the dryer :( Stay away from this company. They don't deserve to be in business :(