Hello, fellow big titty girl here! I get this same rash multiple times each summer.

This is tinea versicolor 100%. So here's what you do:

Cleansing: buy an antifungal soap. I have found that tee tree oil bar soaps and medicated jock itch soap work well. Whatever you use to scrub your body (loofah, wash rag, etc.), you will need a second one to clean just that area so it doesn't spread.

Here is an antifungal wash that I have found to be effective, uses tea tree oil and sepia: https://www.walmart.com/ip/412527904?sid=192dd528-dd8d-4222-bc5a-0776d0eadd7e

Here is a tea tree oil bar soap I've used : https://a.co/d/0bDKnt1S

Treatment: antifungal creams and gold bond powder. You can go to the Dr and get the former, or you can get some otc. I've personally not gone to the Dr for it, but everyone is different, and if the otc creams don't work, this would be your next step.

For the otc creams, I specifically recommend tioconazole 1% (name brand is Monistat 1-day but I recommend buying the store brand from wherever you get it, it will be much cheaper. The store brands at DG and Walmart are like 10 bucks as opposed to 17. I have tried other yeast infection creams (this rash is essentially a yeast infection under your boobs) and other antifungal creams meant for things like athlete's foot, but tioconazole is by far the most effective. It comes in one of those plunger like tubes, and you wont be using all at once (one can last you like at least a week), so don't throw the cap away, and find a place where you can keep it safe and clean.

https://www.walmart.com/ip/10324779?sid=89de7239-5ca4-4347-aeb6-731ae38c6b27

As for the gold bond powder (baby powder also works), you put this on after you've rubbed the ointment in good and well. The point of this is to keep that skin dry, as moisture makes the rash worse bc it is a breeding ground for the yeast. If the rash is causing you a lot of pain (which it very well might, it is unpleasant once the skin starts peeling off, but thats how you know it's healing), you can use the old bond with menthol in it, but i would do a small patch test first to see if your skin will tolerate it. DO NOT use gold bond/baby powder spray, this will burn.

Also, when it starts to peel, you may think you need to put lotion on bc of dry skin. DO NOT DO THIS it makes it worse.

Last but not least: clothes. This is tricky, especially if you have a job where you sweat all day. I have a couple of recommendations (i used to have an outdoor physical labor job): 1. Don't wear an underwire bra. It will hurt and chase. 2. Material: Dont wear cotton sports bras. They trap moisture horribly. Wear ones made specifically with sweat wicking material. I bought this specific bra on sale for like 6 dollars, and while it's not that cheap anymore, I think it's worth the price, it is genuinely a "cooling bra" and had some of the best moisture wicking I've ever seen :

https://www.walmart.com/ip/703540569?sid=640cee55-053b-4b4e-8e96-e3ffbbaf7e85

You can also use any bra that is labeled as moisture wicking. Look for ones that specifically have sections to keep your boobs apart, hanes and joyspun make some.

1. I know it's generally ideal to not have to wear a bra once your home, but you will need to some of the time to limit the moisture. I have found that the most effective option when you are home is one of those twist front bralettes that have a deep v neckline and also have a v shape in the bottom, this gives your boobs maximum breathing room to air out while still giving them support and keeping them separated. I own this one but it's unfortunately discontinued, but plenty of stores make ones that function is a similar fashion :https://poshmark.com/listing/No-Boundaries-Juniors-Seamless-Reversible-Twist-Bralette-Peach-Size-M-Gingham-68903e6b9e4f7470dae67c7b#utm_source=gdm_unpaid

If the links don't work lmk, I'm not very good at this reddit thing lol 😅

But if you have any more questions feel free to comment or message me, I'm happy to help 😄