first diffuser in my whole life [SEP] i have never bought and used a diffuser in my life i have had hair stylists use them on my hair this thing was great it fit on my conair hairdyer which has a inch nozzle my hair is very thick so it takes forever to dry it but not with this thing also i have never been able to style my hair curly without alot of fuzz until i used this diffuser the one downside wasnt that big of a deal to me is that it dose collapse while using it but it still works i have only used it once so far so i will write additional reviews if something changes oh and it dosent come off of the dryer easily which is good there are silicon prongs on the inside so it fits the hairdyer i read alot of reviews before purchasing this one it was between different diffusers hope this helps anyone that is considering buying one