Tecnu for poison oak and similar. https://www.amazon.com/s?k=tecnu&i=hpc&crid=18THQDRPV1659&sprefix=tecnu%2Chpc%2C183&ref=nb_sb_noss_1 When I was just a kid, my system was so prone to it, I just had to be a mile from it, and the wind would get me fully covered. I would get it so bad, that I had to get some shots that vaccinated me against it, worked for decades, I could pick it and not get a reaction. Now, I can get it, but still nothing like in earlier life, just normal rashes. Before the shots, my body would get so covered and puffed up, couldn't wear clothing and couldn't go to school.
Gone through every remedy imagined. Calamine worthless. Gold Bond with Lidocaine better than that. But try the Tecnu, if you're always around it, consider the shots. Some guys out in the woods even would eat very small amounts of it, and develop a resistance to it. Never did that, shots a lot easier.