Promising review: "I bought this because of all the hype on TikTok, and I wasn’t expecting much, to be honest. I have these glass shower doors that have been water marked for a while, I usually use a magic eraser, but that doesn’t take them away very well. But after putting this on a microfiber towel, and simply rubbing it in, it is as clear as it was the day we bought them, I cannot believe this! I can’t wait to clean other things! I would recommend gloves, because I didn’t use gloves, and I can feel my finger is a little scratched up from the little particles that has in it." —Jennifer
Get it from Amazon for $5.97.