The brush helps to work the lather around the whiskers and seems to stand them up a bit more = plus it just feels really good. If you go with a brush, go to Amazon and get a cheap bdger brush, about 15 bucks. Yes, you can get a boar bristle one for about 5 or 6 bucks but the badger is worth the difference. Of course you can spend over a 100 bucks on a badger brush but the 15 dollar one is a great starting point.