You might want to keep a few teabags in your first aid kit. Besides being an extraordinarily healthy drink, tea applied to the skin can also be very healing.
Redditor RhiannonMae, a nurse, says she uses a dry black tea bag to stop small wounds from bleeding. The caffeine in tea apparently shrinks the blood vessels, and all you have to do is apply a little pressure with the tea bag for a minute or two to stop even heavily bleeding wounds from continuing to bleed.
Sites around the web seem to agree with this natural remedy, although the Healing Pastures blog recommends using a cool, moistened tea bag to treat bleeding wounds, sores or ulcers, cuts, and burns. We've previously mentioned you can soothe razor burn with a tea bag, and commenters on that post chimed in to add you can apply a tea bag to sunburns (and bleeding cuts). This morning, one of my eyes was irritated and puffy (from blepharitis, to be exact), and applying a warm, moist tea bag to the area almost cured me instantly.
So the next time you have a cut or skin irritation, make a cup of tea.