The ReFa CLEAR Brush Head is the replacement brush head specifically designed for the ReFA CLEAR device. Made with fine, handmade KUMANOFUDE tips of varying lengths, this brush effectively conforms to the uneven surfaces of skin to remove dirt and grime from pores.Key Benefits:Ultra-fine, tapered bristle tips are small enough to remove dirt and grime from the pores.Varying bristle tip lengths allow the brush to smoothly conform to uneven surfaces of skin.Wave-shaped roots provide a cushioning flexibility to the bristles.The handmade KUMANOFUDE brush represents the finest in traditional Japanese craftsmanship.Tip: The ReFa CLEAR BRUSH HEAD should be replaced at least once every six months for hygienic purposes. It should also be replaced if: your skin is irritated during use, the feel of the bristles has changed or the brush head becomes deformed or damaged.