Ask for 'Phenolated Calamine' lotion @ your Pharmacy. It is far better than Regular Calamine, & dries it up much faster. Also be sure & take a daily dose of Benadryl or Allegra as well, until all itching subsides.
Naturally enough, I prefer to use homeopathic remedies. It is worth taking a bottle of homeopathic Rhus tox with you when walking in areas infested by poison oak or poison ivy. Many homeopathic remedies can be purchased over the counter in health food stores or specialty food stores. They come as drops or as tablets, usually 30C strength, but any potency will help. Here are the five best ones to consider. 1. Rhus tox This remedy is actually made from poison ivy, so it is specific for most miseries inflicted by the plant. It is used when the eyes are swollen shut and rash is better from warm water application. 2. Arnica treats a rash that has transparent blisters. The skin feels hot. 3. Apis can be used when the rash is red and filled with fluid, or if there is swelling in the area of the rash. 4. Kali sulf is used on poison ivy rash that is yellow or full of pus, especially if the pus is yellow. 5. Sulphur. The rash is worse when you first get into bed and with scratching or bathing. The rash is dry and crusty. The person needing Sulphur will scratch the itch until it bleeds.
Bleach works well if is open and you can stand the pain. Benadryl at night so you don't scratch while you are sleeping.. by the way calmine lotion is a joke... you get pink stuff all over everything and it never helps.. just saying