Refinishing. Granite countertops usually come with acrylic finishes to protect it from water and other stains and splashes. Remember that granite will naturally absorb color and stains because of the porous nature of granite, which is why it needs to be finished with acrylic. Eventually, however, continued use of the countertop will wear away the acrylic finish. Refinish the countertop by using lint-free fabrics to apply commercial acrylic coating for granite. These are available in most hardware supplies shops.