Provides an extreme, dH22:L23eep clean on shower doors leaving behind a sparkling shine. Specially formulated to clean soap scum and hard water stains on shower glass. An ideal cleaning prep for Rain-X Shower Door Water Repellent. For glass surfaces only. Comes in 12 ounce bottle, set of 2. Rain-X shower door extreme clean removes harsh build-up on glass Shower doors to deliver the ultimate in sparkling clean. This unique product, specially formulated for use on glass Shower doors, is ideal for removing soap scum, dirt, hard water build-up, calcium, lime stains and rust stains. Rinse and wipe dry with a clean paper towel or cotton cloth. Set of 2. Provides an extreme, dH22:L23eep clean on shower doors leaving behind a sparkling shine. Specially formulated to clean soap scum and hard water stains on shower glass. An ideal cleaning prep for Rain-X Shower Door Water Repellent. For glass surfaces only. Comes in 12 ounce bottle, set of 2.