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What Are the Best Remedies for Under-Breast Rash?

Yeast or fungus in warm skin folds can trigger a painful under-breast rash. Women offer a range of remedies to cope with this problem.
What Are the Best Remedies for Under-Breast Rash?
Breast test woman examining her breasts for cancer heart attack pain in human body on gray background

Women rarely talk about one delicate problem that many of them experience. It is especially common at this time of year because of warm, humid weather. These conditions favor the growth of fungus under the breasts that leads to under-breast rash.

Drug companies may be unaware of the problem. As far as we can tell, there are no FDA-approved products specifically designed to ease the redness, itching and discomfort these infections create. As a result, women have come up with their own approaches for treating this problem.

What Do Women Do for Under-Breast Rash?

We have heard from hundreds of readers about their ingenious remedies for under-breast rash. Here are just a few examples.

Athlete’s foot medicine:

“I had a fungus rash under my breasts. There was some Tinactin antifungal cream for athlete’s foot in my bathroom cabinet. I used it twice a day and in about a week the rash was gone.”

Diaper rash medicine:

“Under my breasts I get a very painful ‘rashy type redness’ that has a bad odor. It even seeps liquid sometimes from the rash. My solution, not ‘cure’, is to wash, pat dry and then apply Zincofax (for diaper rashes). Within ten minutes all the stinging and burning is gone and in a few hours everything has dried up and the skin is back to normal for the time being.”

Zincofax is zinc oxide, which has been used for decades to protect skin from moisture and irritation.

Vaginal cream:

“Do you think vaginal cream will work as well? I’ve been having this rash for close to a year now.”

Many women do use Vagisil or similar products for yeast infections to treat their under-breast rash.

One reader offered her solution, Monistat Chafing Relief Powder Gel:

“I have had this issue (under-breast rash) my entire life. Like my mother and grandmother, I started using cornstarch or baby powder. That worked, but it has to be applied twice a day or more often depending on how badly you sweat. Getting powder everywhere at work was embarrassing. When I started driving a big truck, trying to apply the powder became even trickier.

“Zinc oxide protected the skin, but it felt gross. I can’t remember how I was introduced to it, but I started using Monistat Chafing Relief Powder Gel. It is primarily dimethicone. This product goes on like a gel, but feels like a silky powder. It doesn’t dry, but gives just the right amount of slippage.

“I use Monistat yeast infection cream first for the required number of days to heal any yeast infection. Then Monistat Chafing Relief Gel protects the skin from moisture and friction.

“I apply it in the morning and it will actually last all day. It is a little on the expensive side, but it reduced the number of boils caused by hair follicles, sweat, heat and friction that powder usually didn’t prevent.

“I have been using this product for years and I tell my doctors about it every chance I get. They are often surprised at how healthy my skin is under my breasts, under my stomach and in my groin.

“Other products that contain dimethicone don’t feel the same. The closest alternative I have found so far is Lanacane Anti-Chafing Gel, but it isn’t as silky as Monistat. It changed my life.”

What Other Remedies Can Ease Under-Breast Rash?

Other remedies that have been shared include coconut oil, old-fashioned amber Listerine, Vicks VapoRub, Zeasorb powder and apple cider vinegar. Many women also suggest using a cotton handkerchief or absorbent pads under the bra to keep the area dry. You can read even more about such remedies here.

Milk of Magnesia:

Most people think of milk of magnesia as a chalky white liquid laxative. Perhaps the most famous brand is Phillips’ Milk of Magnesia. The active ingredient is magnesium hydroxide.

Many years ago a reader told us that milk of magnesia (MoM) was a great underarm deodorant. That in turn led us to develop a whole line of aluminum-free MoM Roll-on Deodorants. Learn more about them at this link.

We mention this because some women have taken to using antiperspirants under their breasts. We’re not sure that is a good idea, since all antiperspirants contain aluminum. Some scientists have raised concerns about aluminum and breast cancer (Journal of Inorganic Biochemistry (Aug. 15, 2015).

That brings us back to MoM. Visitors to this website say it works well for under-breast rash.

F.G. reports:

“MoM! Milk of magnesia works well. Dab it on and let it dry.”

Joanne says:

“I have been using the People’s Pharmacy MoM (milk of magnesia) roll-on deodorant under my breasts for itchy fungal rashes. I use my hair dryer to dry the MoM. The rash usually clears up in 2 days. I LOVE MOM!”

T.W. agrees with Joanne:

“I used to dab milk of magnesia under my breasts, but now I use the People’s Pharmacy roll on milk of magnesia and enjoy easy, non-messy, and quick applications in addition to a healing plus preventive treatment! Thanks for such a great product!”

No One Best Solution for Under-Breast Rash:

Ultimately, trial and error will yield the best approach for any individual woman. Some women sing the praises of vodka. No, you don’t drink it! You apply it. Others recommend Noxzema skin cream. Gold Bond also has its advocates. Nothing works for everyone.

Revised 5/31/18

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About the Author
Terry Graedon, PhD, is a medical anthropologist and co-host of The People’s Pharmacy radio show, co-author of The People’s Pharmacy syndicated newspaper columns and numerous books, and co-founder of The People’s Pharmacy website. Terry taught in the Duke University School of Nursing and was an adjunct assistant professor in the Department of Anthropology. She is a Fellow of the Society of Applied Anthropology. Terry is one of the country's leading authorities on the science behind folk remedies. .
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