You’ve probably seen it a hundred times. Someone gets a cut, out comes the hydrogen peroxide, and that foamy white bubbling starts up. Looks like it’s working, right? Looks like it’s nuking bacteria and doing something useful.
It’s not.
According to WebMD, using hydrogen peroxide on a wound actually harms the tissue and delays healing. Not just fails to help — actively makes things worse.
Here’s the problem. Your body is already running a whole operation the second you get a cut. It’s sending in specialized cells to close things up, rebuild tissue, and fight off any real infection that shows up. Hydrogen peroxide doesn’t know the difference between a bad guy and one of those repair cells. It just goes after everything. So you’re basically pouring a chemical on your wound that kills off the very workers your body sent to fix it.
University of Utah Health points out that your wound doesn’t actually need to be germ-free to heal. Your body’s got that covered. And if you’re someone with diabetes, circulation issues, or anything else that already makes healing harder — dousing it in hydrogen peroxide makes a tough situation even tougher.
The bubbling, by the way, is just a chemical reaction with an enzyme called catalase, which is found in your blood and tissue cells. It looks dramatic. It doesn’t mean germs are dying.
So what should you actually do? Plain cool running water, and mild soap if you have it nearby. Rinse the wound out, gently clean around it, then cover it with a clean bandage. Simple, a little boring, and it actually works.