HarajukuHunnies (on twitter) sent me this Parian Spirit brush cleaner. I must say that I like it and might be one of my favorite brush cleaners.. Parian Spirit is preferred by professionals because it really cleans the brushes. It has a nice citrus smell to it (if you don't like the smell of citrus I would recommend you not to get it) and it is gentle to the bristles on the brushes.
All you do is rotate the brush as you spray some product. Wipe it clean with a terry cloth and just wait for the brush to dry. Its a quick dry, so you wont have to wait for long :)