Bloodstains.

[terrenepixy.livejournal.com]

(Mods : I'm sorry if there's like a big entry for stuff like this - if there is feel free to direct me to it and I'll repost. ^^)

I found a new quick trick for getting bloodstains out of underwear - Neutrogena Oil-Free Acne Wash and cold water. XD It works better than soaking, and it doesn't ruin the fabric, at least with cotton underwear. Just soak the knickers in cold water, put some soap on, and scrub a little. It comes right out. ^^ Incidentally, it also works for getting sharpie off of skin. XD

Hope that's useful for someone!

Comments

This is due to an enzyme in cells

[sara-msilf.livejournal.com]

called peroxidase. It is used to break down stuff that is used to kill bacteria with peroxide.

But older bloodstains won't do the cool bubbly thing - the enzyme will break down with time.

~Sara the Science Nerd, at your service.

Re: This is due to an enzyme in cells

[arseaboutface.livejournal.com]

Thanks! I sort of vaguely remembered that from high school biology, but not in so much detail.