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Applying heat with a common hair dryer causes controlled pain which counters and neutralizes any itch instantly. Pain stops as soon as the heat is removed. Works anywhere on the body, including private areas.
I have done the hair dryer itch thing and it works. pretty long relief. I had moderate area poison ivy (or oak or sumac who the heck knows) and I combine first the hair dryer and then after a minute I sprayed it with extra hold hair spray. I get a couple of hours of no itching and I just respray. CAREFUL not to reverse the order as you might light yourself on fire, but at least there is good info on burn control, just kidding, DON'T light yourself on fire.
Thanks to the presenter for bringing the hair dryer thing to instructables.
Isopropyl alcohol (just a dab) works great on flea bites. I've yet to test it on other forms of itchiness. It burns like a mother****er if it gets into an open wound, though, so I'd definitely pass on itchy papercuts with this.
Another method of applying heat, useable for poison ivy, is to use hot water. I have used a sink sprayer attachment to apply water as hot as I could stand it (but DO NOT SCALD YOURSELF, it doesn't help!) At first it stings, then it feels weird (my theory is that the nerve endings are shorting out at this point) and then you can stop treatment. You can get hours of relief from poison ivy with this method. It really works.
IMHO, hot water is too dangerous and hard to use on small spots. Try a hot hairdyer and see what you think about it. There is no chance of "scalding" with a hair dryer.
I read this when it was first posted and had an opportunity to test it today. Seemed to work on a mosquito bite I got. I wonder if the heat cooks the enzymes that cause the itch. That's the only thing that makes sense to me.
This must work but I will not try it because you hurt yourself to just stop a simple itch. Just to tell you, Pinching the itch while hairdrying it works the best. 4/5 stars
Thanks to the presenter for bringing the hair dryer thing to instructables.