Average, not great
This might work better for someone with finer/less hair than me but regardless, it'll do in a pinch. I flip my hair upside down to diffuse and my hair is so heavy and thick that it partially collapses the diffuser most time. Also, despite the little finger prong things, the hair just all sort of smooshes together at the root and takes ages to dry as there's no circulation. If my hair is already mostly dry,  this can help finish it up or if I'm just trying to get a gel cast to set, this can handle it but for thorough diffusing this doesn't really cut it for me.
Rating: 3 stars