If you have a yeast infection, some of the things you might instinctively do to feel better can actually make it worse or drag out your recovery. Douching, reaching for scented products, and even treating yourself with over-the-counter medication before confirming the diagnosis are among the most common mistakes. Here’s what to avoid and why it matters.
Don’t Assume It’s Actually a Yeast Infection
This is the single biggest mistake, and it happens constantly. In one study of women who purchased over-the-counter antifungal treatment because they believed they had a yeast infection, only about 34% actually had one. Nearly 19% had bacterial vaginosis, 21% had a mixed infection, and about 14% had nothing abnormal at all. That means roughly two out of three women were treating the wrong condition.
This matters because antifungal creams do nothing for bacterial vaginosis or sexually transmitted infections, and using the wrong treatment delays the right one. If your symptoms don’t match a pattern you’ve had before, or if it’s your first time experiencing vaginal itching, burning, or unusual discharge, get tested before you self-treat. Even if you’ve had yeast infections in the past, recurrent symptoms can have a different cause each time.
Don’t Douche
Douching is one of the worst things you can do during a yeast infection. Your vagina maintains a slightly acidic environment (a pH between 4 and 5) that allows protective bacteria, primarily Lactobacillus species, to thrive. These bacteria are your natural defense against yeast overgrowth. Douching disrupts that balance by washing away these beneficial organisms.
Not all douching products cause the same damage, but baking soda-based douches are particularly harmful because they have a pH of around 9, which is highly alkaline and directly inhibits Lactobacillus growth. Even vinegar-based douches, which are acidic and might seem helpful in theory, still physically flush out the protective bacterial colonies your body needs to recover. The bottom line: your vagina is self-cleaning. During an active infection, leave the internal rinsing to your body and let your treatment do its job.
Don’t Use Scented Products Near Your Vulva
Scented wipes, sprays, bubble baths, and fragranced soaps can trigger contact dermatitis on vulvar skin, causing redness, swelling, and itching that layers on top of your existing yeast infection symptoms. About 50% of feminine hygiene wipes contain fragrances, and many also include essential oils, botanical extracts, and vitamin E (tocopherol), all of which are common contact allergens. Fragrance compounds are consistently among the top 15 allergens identified in patch testing.
When your vulvar tissue is already inflamed from a yeast infection, it’s more vulnerable to chemical irritation. Stick to warm water for external washing, or use a gentle, unscented cleanser if needed. Check ingredient labels carefully: “natural” products containing essential oils or fruit extracts can be just as irritating as synthetic fragrances.
Don’t Wear Tight, Synthetic Clothing
Yeast thrives in warm, moist environments. Tight-fitting pants, leggings, and synthetic underwear trap heat and moisture against your skin, creating ideal conditions for the fungus to keep growing. Cotton underwear wicks away sweat and moisture far more effectively than nylon or polyester. If your underwear has a synthetic body with a small cotton crotch panel, that’s not enough. The panel doesn’t fully protect you from the moisture-trapping effects of the surrounding synthetic fabric.
During an active infection, choose loose-fitting clothes when possible, wear 100% cotton underwear, and change out of sweaty workout clothes or wet swimsuits promptly. Sleeping without underwear can also help keep the area dry overnight.
Don’t Sit in a Wet Swimsuit or Soak in Pools
Prolonged exposure to a wet swimsuit keeps your vulvar area damp, which encourages yeast growth. Chlorinated pool water adds another layer of concern: chlorine kills bacteria indiscriminately, including the beneficial Lactobacillus that helps maintain your vaginal pH. When that pH shifts too far toward alkaline, the fungus responsible for yeast infections has an easier time multiplying. Chlorine can also directly irritate vulvar skin, causing burning, itching, or swelling, which is the last thing you need on top of an existing infection.
If you do swim, change out of your suit immediately afterward, rinse with plain water, and put on dry cotton underwear.
Don’t Have Unprotected Sex
Sex during a yeast infection isn’t dangerous, but it comes with several downsides. Friction can further irritate already-inflamed tissue and make your symptoms worse. Yeast infections can also be passed to a partner. Men who are exposed, particularly uncircumcised men, can develop balanitis, a yeast infection of the penis that causes itching, burning, moist skin, white patches, or a thick white discharge in the skin folds.
If you’re using vaginal antifungal suppositories or boric acid, there’s an additional concern: these treatments can weaken condoms, diaphragms, and spermicides, making them unreliable for preventing both pregnancy and STIs. It’s generally better to wait until your treatment is finished and symptoms have cleared before resuming sexual activity.
Don’t Stop Treatment Early
Over-the-counter antifungal treatments for uncomplicated yeast infections are typically short courses of one to three days. It can be tempting to stop once your symptoms improve, but finishing the full course matters. Stopping early can leave enough yeast alive to bounce back, leading to a recurrence within days or weeks.
If your infection is more severe, recurrent (four or more episodes in a year), or caused by a less common yeast strain, you may need 7 to 14 days of treatment instead. Recurrent infections sometimes require a maintenance regimen lasting six months. If your symptoms don’t improve within a few days of starting treatment, that’s a signal to get evaluated rather than just switching to a different over-the-counter product.
Don’t Self-Prescribe Boric Acid
Boric acid vaginal suppositories have a legitimate medical use, but they’re typically reserved for non-standard yeast infections that haven’t responded to conventional antifungal treatment. Using boric acid as a first-line home remedy without guidance carries real risks. It can cause vaginal irritation, unusual discharge, and allergic reactions including rash, hives, and swelling. It should never be taken by mouth, as it is toxic if swallowed.
Boric acid is also not safe during pregnancy or breastfeeding, and it’s not approved for use in children. If you’ve been reading online that boric acid is a cure-all for vaginal infections, know that it’s a second-line option for a reason. Start with standard antifungal treatment, and talk to a provider if that doesn’t work.
Don’t Load Up on Sugar to “Starve” or “Feed” the Yeast
You may have heard that eating sugar feeds yeast infections. The relationship between dietary sugar and vaginal yeast is more nuanced than that. Lab studies show that glucose levels do affect how the Candida fungus behaves, influencing its ability to shift into a more invasive form. But the glucose concentration in your bloodstream is tightly regulated by your body, and eating a candy bar doesn’t meaningfully spike the sugar levels in your vaginal tissue the way it might in a petri dish.
That said, poorly controlled blood sugar, as seen in unmanaged diabetes, is a well-established risk factor for recurrent yeast infections. If you’re getting yeast infections frequently, it’s worth having your blood sugar checked. For a one-time infection, though, a drastic dietary overhaul isn’t necessary. Focus on completing your treatment rather than eliminating every gram of sugar from your diet.