The American Academy of Dermatology recommends changing your blade every 5-7 shaves. Yeah, that'll probably be new to you! But shaving is skincare and skincare is shaving well. Changing your blade also directly correlates to the issues you experience with your skin, so just as you’d wash your makeup brushes to prevent bacteria-fueled breakouts, you should change your blade to prevent nicks and inflammation of your follicles (i.e. bacteria fueled breakouts on your legs).