Re: poison oak home remedy
I do the same thing with black fly and mosquito bites. Actually, I've got a battery gadget that generates infrared and will heat a small area. The sooner heat is applied, the better.
Literature with the gadget says that toxins in many insect bites are heat sensitive, and heating the bites helps break down the toxin. Don't know if it's toxins or histamines or both, but it does work.
Our camp has a dug well, and I've run it dry by taking hot showers to stop the itching. Around here, insect bites can cover areas as large as poison oak rashes, and take about as long to get as brushing up against a bush.
The home remedy I grew up with was buttermilk and salt. Can't say I have fond memories about that remedy.