PREVENTS RUST RINGS - This silicone rubber cap is specifically designed to eliminate stubborn rust stains caused by shaving cream cans REUSABLE - When one shaving can runs out, simply remove the cap and place it on a new can SAVES TIME AND MONEY - With almost no effort at all, users no longer spend hours scrubbing unsightly rust rings that are nearly impossible to remove FITS REGULAR GEL SHAVING CANS - Cap neatly fits shaving cream cans 2 inches in diameter FITS - Common Gel Shaving Creams such as: Aveeno Men’s / Shave Gel, Dove Men+Care Edge Ultimate / Edge, Gillette Fusion & ProGlide, Gillette Satin Care, Neutrogena Shave Gel, Nivea for Men, Schick Hydro, and Skintimate Gel Rust-O-Less is a silicone rubber cap that firmly fits around shaving cream cans and prevents rust ring stains formed in one's shower or bathroom countertop. Rust rings often form when water mixes with the metal base of shaving cream cans.