For me, it created a lot of frizz. My hair does not like to be touched by the dryer. In hindsight, I should have kept the dryer and just used it without the "hand" diffuser. I sold it on the swap board and bought an FHI Nano--which I love.
I have a cheap dryer at my vacation home. I only diffuse for a short period of time, but there is a BIG difference between the cheap dryer and the professional dryer.
3a (Corkicelli), highlighted, fine, low porosity
modified CG, since April '07
CG since 3/11/08
HGs: Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; DM MiraCurls Curling Gelly; UFD Curly Magic; Shescentit LIs; Sevi conditioners; Botanical Spirits Puree, CJ Repair Me