It's obvious. If you use the device with a compass and a cactus on the table while wearing a suit, you will magically get a cappucino!
...at least that's what the product pictures say. Other than that, I don't really know.
My beard is happy with a commercial brush in the style of an "airbag massage comb".
Compared to my friend's device, the bristles of the "men" version are somewhat coarser. This makes sense especially in the beard area. I hope this helps you.