Short answer: a healthy vagina is dominated by Lactobacillus bacteria that keep it slightly acidic and self-cleaning. When that balance is disrupted — by antibiotics, hormones, harsh washes or stress — you're more prone to odour, discomfort and infections. Supporting it is mostly about not over-cleaning, plus the right bacteria.

How the vaginal microbiome works

Lactobacilli produce lactic acid, keeping vaginal pH low (around 3.8–4.5). That acidity is protective — it keeps less-friendly microbes in check. The vagina is genuinely self-cleaning, which is why internal douching and scented washes tend to do more harm than good: they strip the good bacteria and raise pH.

What throws it off balance

Antibiotics, hormonal shifts across your cycle and life stages, harsh soaps, tight non-breathable fabrics, and stress can all disrupt the balance. Signs include unusual odour, itching, or changes in discharge — and recurrent issues are worth discussing with a doctor.

How to support it

Wash the external area with water or a gentle, pH-appropriate cleanser only — never internally. Choose breathable cotton underwear, and don't stay in damp gym wear or wet swimwear. Specific Lactobacillus strains have evidence for supporting vaginal flora, which is the thinking behind our Feminine Care Pre+Probiotic Melts — a convenient way to support feminine balance from the inside. These support general feminine health and aren't a treatment for infections, which need proper medical care.

FAQ

Do I need to wash inside? No. The vagina is self-cleaning; internal washing disrupts its protective bacteria.
Can probiotics help with odour? Certain Lactobacillus strains may support a balanced flora; persistent odour should be checked by a doctor.
Does diet affect vaginal health? Indirectly — gut health, blood-sugar balance and hydration all play supporting roles.

General education only, not medical advice. Recurrent infections, unusual discharge or pain should always be assessed by a healthcare professional.