And let me know how it goes for you please.
And wear your panties inside out also. Thread is on the inside. You know I used to be so confused with cotton because I still broke out. Until I talked to a woman who made clothes for L.L.Bean. She told me there is polyester in the thread. and about 50% depending on maker and weight of the clothes. Because it is stronger and doesn't dry rot like pure cotton. Started wearing under clothes inside out and going shirtless when I could and I began to recover. Keeping it at bay to a degree.
Allergens make me sweat more than ever. I usually don't sweat. And sweat contains salt and it accumulates increasing the rash from salt being an irritant to rash areas. Vinegar not only cleans this salt off, but it is a drying agent. Keeping it drier longer.
And thus it helps. Most people who are allergic to polyester are to latex also. And what many don't know is that most people who are have little to no skin reaction from it. I am guessing because it is mild and/or they have oily skin. Dry skin becomes irritated fast and more. Then as they age the immune dips a little, and this allergen increases enough for many to beging the rashes. Or splitting. Most people rash from it and sun allergy. But some few "very few" like me don't. They dry and split instead. Thus looking like eczema to doctors"I don't know how because it looks nothing like it" But doctors flock towards eczema diagnostics and give you ointments. These ointments are oil based. Thus what you sweat through it is kept from the skin from the oil. And thus the salt isn't all over your skin and this helps. And that is my theory of how ointments help rashes.
Wear some loose cotton panties. And wear two shirts. Tuck the under shirt "100% cotton inside your panties. And wear that one inside out so even the polyester in the threads are on the outside. Sensitive areas like that break out most. And see how it goes.Your outer shirt goes over your panties to hide them and not look stupid. hehe, and also tucks in your pants though. And don't wear tight pants or tight belt.
And don't talk about polyester allergies. It is a big secret! :))
If my immune is down, and I wear tight pants, the amount of polyester in the threads of my cotton pants, causes break outs in the same place as you. I also get small blisters when severe. And always have little reddish bumps like a goose bump just above the pant line. One way to find out is to wear cotton only, and loose. And see if the irritation gets a little better. It may not go away for having polyester in all your threads.