I love it!
After stumbling across these by accident, I looked at many types and they were all battery operated and had a bunch of fiddly different sized connections for different sized brushes, or were too expensive.  This was perfect with it’s ‘fits all’ connector and rechargeable battery.  I was a bit hesitant as there were not many reviews, but at under $20 I was willing to take a chance.  It worked right out of the box as it already had enough charge in it to do all my make-up brushes.  To save changing the water out after every brush to rinse, I filled my sink with clean, warm water for rinsing, and ‘spin dried’ the brushes out of the sink.  It did such a great job on all my powder, eyeliner and eyeshadow brushes, but for greasy foundation it might be better to massage some undiluted antibacterial hand soap into the bristles first, then clean it in the brush washer, or use specialized brush cleaner.  After the final spin to dry them, I simply flicked the brush to reshape it, or reshaped it with my fingers, the bigger brushes come out almost dry, but shorter, denser, flat brushes need to dry out naturally for a bit longer.  I am wondering, as an artist, whether this might be useful to thoroughly clean some of my bigger watercolour mop brushes too!
Rating: 5 stars