Don’t use peroxide on wounds if you can avoid it. Yes, it kills bacteria, but it also damages healthy skin cells and slows healing. Scrapes are better off with soap and water. Save the fizz for the sink, not your knee.
Also, it’s not great for wood (it can pit the finish) or fabric (hello, bleach spots). Stick to plastic, metal, and glass. Think of it as the picky eater of the cleaning world—it works, but only with the right company.
Frontiers | How Microbes Defend Themselves From Incoming Hydrogen Peroxide
