Look for an exfoliating scrub designed for your scalp. Your scalp contains pores just like the rest of your skin, so gentle exfoliation can help remove buildup from oil, sweat, and excess product. Get your hair wet and separate your hair into sections to ensure that you apply the scrub evenly to your hair. Massage your scalp for a few minutes before rinsing thoroughly. Follow with a conditioner to add additional nourishment to your hair.