How to get rid of sebum in piercings? (ear cheese ew!)

pretty straightforward: Sebum is that nasty stinky white or off-white goo that builds up in piercings. (it’s also part of what comes out of oil/sweat glands). It builds up very quickly in my ear piercing. it’s gross and smelly, and I would like to know how to slow its production, and a good product for keeping it clean. Thanks.