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The original was posted on /r/lifeprotips by /u/DapperSquiggleton on 2025-06-24 23:11:41+00:00.

Using the hydrogen peroxide instead of water during the ironing process (using an external spray bottle, not the iron’s water reservoir) allows the heat and hydrogen peroxide to denature the proteins in the blood and break it down.

Use the iron’s hottest setting that the clothing piece can tolerate, and spray the hydrogen peroxide liberally over the stained area. Some recommend using a rag to work it in, but for me it was effective without doing so.