Okay today my mom bought me a 100% hard boar bristle brush. It's like it has soft brown bristles then hard black ones inside those, kinda like a mix. Although it's like when i brush it kinda hurts and i have a head full of hair. So to sum it up i'm trying to find out should i keep brushing with it to get used to the pain because it's a "wave" brush and i already have 360's. What should i do? Will this brush work with a fresh new haircut?