Dry brushing

Hello guys!!! So I 'm thinking about buying a brush for cellulite, I want to try dry brushing with it or just massage and exfoliate in the shower for skin and cellulite improvement. It's made of wood and coconut bristles, it's eco but it is fairly expensive, at least for me, about 9€. Does anyone have experience with them? Is it worth it or nah? I 'm between this or body scrub.