no i you dont use anything on the skin at all. thats why it has to be a soft natural bristle. you can use it in the shower too. but it wont have the same effect.
the brush has to be all natural bristle. i couldnt find my real one so i used an unused boar hair garment brush i had. it MUST be natural bristle. usually they are boar hair. they dont hurt the piggy toget the hairs. just give them a haircut. hee hee.
you could probably find it even cheaper at a dollar store or rite aid if you didnt have extra cash to use on a good one. a good brush is definitly worth the money though. it feels better nad lasts longs. kinda like when you use a good brush to paint something or a cheap brush.the cheap ones always lose thier hairs and feel scratchy or something.