It’s not the exact one because I got mine from hair school but here’s a similar one from Amazon the bristles make my scalp feel tingly and it’s good for scalp stimulation and hair growth!

BLACK EGG Boar Bristle Hair Brush for Women Men Kid, Soft Natural Bristles Brush for Thin and Fine Hair, Restore Shine and Texture, Set includes Bamboo comb and 3 hair ties(Random Color) https://www.amazon.com/dp/B07JGT79FS/ref=cm_sw_r_cp_api_i_20P8J312ACTDSXP2N2CS