Enjoy the tightly-packed antimicrobial brush bristles of the Universal Round Top Makeup Brush Head for use with sonicblend Pro. Antimicrobial protected brush bristles protect against 99% of bacteria that can grow on brush heads between use. This Antimicrobial Brush Head is for use only with the Sonicblend Pro Sonic Makeup Brush. Not compatible with regular Sonicblend Sonic Makeup Brush. | Michael Todd Beauty Sonicblend Pro Replacement Antimicrobial Round Top Brush Head - #20 | Dermstore