Apple Cider Vinegar Bath: Benefits, Risks and What Research Shows

October 2, 2026 avinashmittal

An apple cider vinegar bath is one of the most shared home remedies online. People use it for eczema, yeast infections, itchy skin and even to “detox.” But does an apple cider vinegar bath actually help, and is it safe? Here’s what the research shows, and how to use one more safely if you still want to try it.

Quick answer: The research doesn’t support most apple cider vinegar bath claims. In a 2019 study in Pediatric Dermatology, daily soaks in diluted apple cider vinegar didn’t improve the skin barrier in people with eczema, and 16 of 22 participants (72.7%) had skin irritation. Cleveland Clinic says vinegar isn’t a treatment for yeast infections. If you try an ACV bath anyway, dilute it well, keep it short, and stop if your skin stings.

What Is an Apple Cider Vinegar Bath?

An apple cider vinegar bath, or ACV bath, simply means adding apple cider vinegar to your bathwater and soaking in it. Vinegar is acidic, and the idea is that its acid will “balance” your skin, calm itching or kill germs.

Apple cider vinegar has been shown to have antibacterial effects, as researchers note in a 2021 study in PLOS ONE. But killing germs in a lab isn’t the same as helping skin in a bathtub, and that’s where the evidence runs thin.

Apple Cider Vinegar Bath Benefits: What the Research Shows

Claim	What the evidence says
Helps eczema	A small 2019 study found no lasting improvement in the skin barrier after 2 weeks of daily soaks, and most participants had irritation.
Changes skin bacteria	A 2021 follow-up found 2 weeks of daily soaks didn’t change the skin’s bacteria in people with eczema.
Balances skin pH	Soaks lowered skin pH right after use, but the change was temporary and didn’t last over the 14-day study.
Treats yeast infections	Cleveland Clinic says home remedies, including vinegar, don’t work for yeast infections and may do harm.
Detoxes your body	There’s no good evidence that a bath, or any “detox” product, removes toxins.

Apple Cider Vinegar Bath for Eczema

Eczema is the reason many people try an apple cider vinegar bath, so researchers at the University of Virginia tested it. In their pilot study, 22 people (11 with eczema and 11 without) soaked one forearm in diluted apple cider vinegar and the other in plain water for 10 minutes a day for 14 days.

The results, published in Pediatric Dermatology, were disappointing:

The vinegar soaks had no significant effect on skin barrier integrity.
Skin pH dropped and water loss from the skin rose right after soaking, but these changes were temporary.
16 of the 22 participants (72.7%) reported side effects, mostly mild irritation, which improved after they stopped.
One participant with eczema had severe skin symptoms that cleared within 2 days of stopping.

There’s an important detail: the study used a fairly strong mix of about 1 part vinegar to 10 parts water. In an interview about the study, the researchers noted that physicians more often suggest about 1 part vinegar to 80 parts water, or 3 to 4 cups in half a bathtub. Weaker mixes haven’t been tested in the same way, so it isn’t known whether they help.

If you have eczema, talk to a dermatologist before trying an ACV bath, and never use one on cracked or broken skin.

Apple Cider Vinegar Bath for Yeast Infection

This is one of the most searched uses, and the one experts warn against most clearly. In a Cleveland Clinic article, an OB/GYN says home remedies for yeast infections don’t work and can do harm. Specifically:

Don’t rely on vinegar. Some people believe a vinegar bath lowers vaginal pH, but vinegar douches upset healthy bacteria and raise the risk of infection.
Don’t put natural remedies in your vagina, since they can cause burning and irritation.
Self-diagnosis is often wrong, especially if you’ve never had a yeast infection before. Other conditions can look similar.

The safest treatment is an over-the-counter antifungal if you’re sure it’s a yeast infection, or a visit to a health care provider. If you get yeast infections often, see a provider rather than trying home remedies.

Side Effects and Who Should Avoid an ACV Bath

Apple cider vinegar is an acid, and the main risk is skin irritation. In the 2019 study, most people had some discomfort even with diluted vinegar. Skip an apple cider vinegar bath, or check with a doctor first, if you:

Have broken, cracked or freshly shaved skin
Have an eczema flare or very sensitive skin
Think you have a vaginal infection
Are bathing a child (ask their doctor first)

Never use apple cider vinegar undiluted on your skin, and keep it out of your eyes.

How Much Apple Cider Vinegar in a Bath? How to Use It More Safely

If you still want to try an ACV bath for comfort, these steps lower the chance of irritation:

Step	Why
Dilute well: roughly 1 part vinegar to 80 parts water (about 3 to 4 cups in half a tub)	Stronger mixes, like the 1:10 used in the eczema study, caused irritation in most people
Test a small patch of skin first	See how your skin reacts before soaking your whole body
Use warm, not hot, water	Hot water dries skin out, according to the American Academy of Dermatology
Keep it to 5 to 10 minutes	Long baths can leave skin drier
Pat dry and moisturize right away	Moisturizer applied to damp skin locks in water
Stop if your skin stings, burns or turns red	Irritation was the most common side effect in research

Better Ways to Soothe Dry, Itchy Skin

If your goal is calmer, less itchy skin, the American Academy of Dermatology recommends simple bathing habits that are backed by dermatologists:

Limit baths and showers to 5 to 10 minutes, using warm rather than hot water.
Blot your skin gently dry with a towel instead of rubbing.
Apply a fragrance-free moisturizer within a few minutes, while your skin is still damp.
Choose gentle, fragrance-free products, and skip harsh deodorant soaps.
See a board-certified dermatologist if your skin stays dry or itchy, since very dry skin can need a prescription treatment.

As with many viral self-care trends, such as the scare about jade rollers and cancer, the simple, proven habits usually beat the trendy fix.

Frequently Asked Questions

Does an apple cider vinegar bath detox your body?

No. There’s no good evidence that an apple cider vinegar bath removes toxins. The National Center for Complementary and Integrative Health says research on detoxes and cleanses is limited and low quality, as our article on whether you need a gut cleanse explains.

How much apple cider vinegar should I put in a bath?

Researchers who studied ACV soaks said physicians often suggest about 1 part vinegar to 80 parts water, or 3 to 4 cups in half a bathtub. Stronger mixes are more likely to irritate your skin.

Can an apple cider vinegar bath cure a yeast infection?

No. Cleveland Clinic says vinegar and other home remedies don’t treat yeast infections and may make symptoms worse. Use an over-the-counter antifungal or see a health care provider.

Is an apple cider vinegar bath good for eczema?

The best study so far found no lasting benefit for the skin barrier and irritation in most participants. Talk to a dermatologist before trying it.

How long should I soak in an ACV bath?

Keep any bath to 5 to 10 minutes in warm water, as dermatologists recommend for dry skin, then moisturize right away.

The Bottom Line

An apple cider vinegar bath is unlikely to help eczema, can’t treat a yeast infection, and won’t detox your body. Its main proven effect is skin irritation, which affected most people in research. If you still want to try one, dilute it well, keep it short and stop if it stings. For dry, itchy skin, short warm baths and a good moisturizer are a safer bet.