take a apple cider venigar bath

The water should be lower than 40cecius, or around it, stay in for 15 minutes, 2cups in a tub should do.
If you have no tub, just dilute the ACV with same amount of water, and put on your whole body, including private spots, head skin., under the nail. You might need to do so as soon as you itch. Do not wash off. Tweet