Here are the best boar bristle brushes out there for a range of hair types. You can also use a boar bristlenylon bristle blend just note that the higher concentration of boar bristles the better.
Best Boar Bristle Round Barrel Hair Brush Cristalbox Three Type
Boar Bristle Brush Benefits 8 Surprising Benefits
Best Boar Bristle Brush For Thick Hair Using A Shiny This Is So Good