How To Prevent Vaginosis

Once vaginitis occurs, it not only itches and is uncomfortable, but if it keeps recurring, the mental burden of "what did I do wrong?" comes along with it. In the clinic, what those who come for vaginitis are most curious about is actually not the drug name but "how can I keep it from happening again?" Fortunately, much of prevention starts not from grand procedures but from small daily habits. Today let me organize five vaginitis-prevention habits I often mention in the clinic, ones that are not difficult yet have clear evidence.

Vaginitis is not a single disease but a term that bundles together various patterns appearing when the balance inside the vagina is disrupted. In a healthy vagina, lactobacilli predominate and maintain a mildly acidic environment, and this acidity serves as a kind of natural defensive barrier. The problem is that this balance is more easily shaken than you might think. The U.S. Centers for Disease Control and Prevention explains that antibiotic use, frequent vaginal washing, hormonal change, and the like can disrupt the balance of the normal bacterial flora and raise the risk of bacterial vaginosis or candidal vaginitis.

The interesting point is the fact that not all answers on how to completely prevent vaginitis have yet been medically clarified. The CDC also states that exactly how bacterial vaginosis develops and how it is best prevented has not been fully elucidated. So prevention is less "do only this and it is 100% blocked" and closer to an approach of reducing the factors that shake the balance one by one to lower the chance of recurrence. The five items below are the most basic items of that "reducing the shaking factors."

A damp, warm environment is the best condition for bacteria to grow. Wearing tight underwear or leggings, or poorly ventilated synthetic-material clothing, for a long time traps sweat and moisture around the vulva. The U.S. Centers for Disease Control and Prevention recommends, as ways to lower the risk of candidal (fungal) vaginitis, wearing cotton underwear, choosing breathable clothing that is not too tight, and keeping the area clean and dry.

Practice is simple. Choose underwear that touches you daily in a breathable material like cotton, and rather than leaving sweat-soaked clothing like workout wear or swimsuits on for a long time, it is good to change as soon as possible. In the clinic, in summer or for those with a lot of exercise, it is not uncommon for discomfort to ease just by checking this one point.

If you are bothered by repeated discomfort or friction irritation from tight clothing, it also helps to look at the discomfort from tight clothing item together.

The most common misconception is the thought that "the more cleanly you wash, the better." In fact the opposite is often the case. The inside of the vagina has a self-cleaning action that purifies itself, so if you wash even the inside with soap or cleanser, the lactobacilli that were playing a protective role get washed away too and the balance can collapse. The American College of Obstetricians and Gynecologists recommends not douching the inside of the vagina and letting the vagina purify itself, and recommends washing the vulva with lukewarm plain water instead of scented products.

The CDC too explains that vaginal washing can actually raise the risk of bacterial vaginosis and may be related to recurrence risk. To summarize:

• The inside of the vagina is not to be washed into, whether with water or cleanser.
• For the vulva (outside), gently washing with lukewarm plain water is enough.
• Products containing fragrance, deodorant, or alkaline soap can shake the balance, so it is safer to avoid them.

In the clinic I sometimes see people who, by habitually using a cleanser that does not match their own vaginal acidity, instead get vaginitis more often. If vulvar skin care is confusing, the article organizing how to care for vulvar skin may help.

Just as bacteria multiply quickly on a wet towel, wearing underwear that has not dried fully itself becomes an environment where bacteria grow. Just wearing underwear that is sufficiently dried after washing can reduce unnecessary moisture exposure. But there is one thing to be careful of here. Drying the vulva after washing with hot air like a hair dryer can actually worsen skin dryness and irritation.

The recommended method is simple. After washing, pat-dry the moisture with a soft towel, and if needed, protect the skin barrier with a low-irritation moisturizer. "Bone dry" and "dry skin" are different. The key is the balance of keeping the environment dry while protecting the skin itself with moisture. If the vulva is often dry and itchy, it may not be a simple hygiene problem, so when vulvar itching recurs, we recommend checking it once.

The menstrual period is a time when the vaginal environment is more easily shaken than usual. The CDC also explains that the frequency of bacterial vaginosis rises during menstruation. Wearing a pad or tampon for too long keeps a warm, damp state for a long time, creating conditions good for bacteria to multiply. The American College of Obstetricians and Gynecologists recommends changing a pad or tampon at least every 4 to 8 hours, or when it is full or feels damp and uncomfortable.

Organizing the basics of period hygiene in a table is as follows.

For reference, if bleeding is heavy enough to change every 1 to 2 hours or your period lasts more than 7 days, it may not be a simple hygiene problem and another cause may need to be examined. Menstruation is also a kind of signal reflecting women's health, so it is good to also read why menstruation is a barometer of health.

If repeated discomfort bothers you, do not agonize alone but feel free to start a consultation.

The last item is the most basic yet most often overlooked part. The balance within the vagina is not unrelated to your whole-body immune state. When sleep is lacking, nutrition is unbalanced, and stress accumulates, the defenses of the whole body drop, and the vaginal environment too becomes that much easier to shake. The CDC explains that a weakened immune state or taking antibiotics raises the overall risk of candidal vaginitis.

In fact, when I look together at the lives of those who come saying vaginitis recurs, it is not uncommon for recurrence to coincide with periods when the sleep pattern has collapsed or overwork and stress overlap. Using antibiotics only when truly needed and exactly as prescribed, and attending to the "basics" of sufficient sleep, balanced meals, and stress management on an everyday basis, is, after all, the most reliable prevention.

If vaginitis keeps recurring even when you keep the above habits well, rather than trying to solve it with drugs alone, we recommend reviewing your whole lifestyle pattern once. As you look at what clothes you like to wear, what your washing habits are, and how your sleep and stress are, an unexpected link often becomes visible. If recurrence still repeats despite this, it may not be a matter of lifestyle habits alone, so it is safer to check the causes of recurring vaginitis through a visit.

Changes in the color, smell, and amount of vaginal discharge can be a signal the body sends. If you are curious about the criteria for distinguishing the normal range from warning signs, we recommend reading things to know about vaginal discharge together. If the pattern recurs chronically, approaching it from the perspective of chronic vaginitis helps.

Vaginitis prevention is completed not by one or two procedures but by steady daily management. Please check at least one of today's five, and if symptoms or recurrence bother you, we recommend confirming accurately through a visit rather than judging alone. Feel free to inquire by chat consultation anytime with questions.

Written by: Lee Dong-hee, Director · OB/GYN Specialist · View physician profile

First published June 9, 2025 · Last reviewed May 30, 2026

References: CDC Bacterial Vaginosis (2024), CDC Preventing Candidiasis (2024), ACOG Vulvovaginal Health (2023), ACOG Your First Period (2023)

This article is intended to provide general health information and is not a substitute for individual diagnosis or treatment. If you have symptoms, please consult through a medical visit.