1This shaver sharper can improve sharpness of your shaver blade and make it last longer, reducing the times of replacing blades. 2Keeps you away from dangerous battered blades and prevents the skin from being easily damaged. 3Before use, lubricate the sharpener with shaving cream or liquid soap, and place the shaver blade flat on the sharpener. 4Help clean the blade, preventing the shaver from easily going bad due to the oxidation of sebum and other dirt on skin. 5Made of synthetic rubber which ois soft, elastic, flexible, lightweight, compact and portable.