I want to recommend this hair appliance:
www.amazon.co.uk/Revlon-RVHA6475UK-Perfectionist-2-in-1-Dryer/dp/B013ETQMZU?ie=UTF8&camp=1634&creative=6738&creativeASIN=B013ETQMZU&linkCode=as2&redirect=true&ref_=as_li_tl&tag=rbc02-21&tag=mumsnetforum-21
My blow dry technique isn't good, so I always need some sort of hot air styler/Babyliss Big Hair to smooth my hair and make it look finished, but all of these appliances have a large round brush, and were making my shoulder length hair far too 'curled under' at the ends, and rather 70s/triangular shaped.
My hair dresser always dries it with a paddle brush, and as Revlon have just brought out a hot air styler with a paddle brush, I thought I'd give it a whirl. I'm delighted to report I now have smooth, straight hair (no straighteners required) that does not curl under at the bottom!!!