Using a lip brush to apply lip makeup will help it last longer as less layers are required in each application.
A lip brush is also often used for the blending of lip products such as a lipliner and lipstick for a more seamless look.
It is also great (and much more hygenic) for testing purposes allowing for washing / sterilazation after testing lip products.
Unfortunately Phoera does not have any lip brushes, so we have acquired these to assist you (not the same quality as Phoera, but will serve the purpose)!
The brush is tiny (only 10cm in length), but it suits the grip for applying precision-type strokes required for the perfect lip finish, and the price is super cheap!