"pH balance" gets thrown around a lot in feminine care marketing, but most people have never actually had it explained. Here's the simple version β what it means, why it matters, and what tends to disrupt it.
What pH balance actually means
pH is a scale from 0 to 14 that measures how acidic or alkaline something is. Pure water sits at 7 (neutral). The vagina, in a healthy state, typically sits between 3.8 and 4.5 β meaningfully acidic, closer to tomato juice or black coffee than to water.
This acidity isn't incidental. It's maintained by lactobacilli, a family of beneficial bacteria that produce lactic acid as part of their normal function. That acidic environment makes it harder for less desirable bacteria and yeast to take hold and multiply.
Why this balance can shift
A number of everyday things can nudge this balance in the wrong direction:
- Harsh or alkaline soaps and washes β most regular soap sits around pH 9β10, far outside the ideal range
- Antibiotics β these can reduce lactobacilli populations along with the bacteria they're targeting elsewhere in the body
- Hormonal changes β pregnancy, the menstrual cycle, and menopause all naturally shift pH at different points
- Semen β which is alkaline and can temporarily raise vaginal pH after intercourse
- Douching β actively disrupts the natural bacterial environment and is generally discouraged by health professionals
- Tight, non-breathable clothing β creates a warmer, moister environment that can encourage imbalance
Signs your pH might be out of balance
You often can't "feel" pH directly, but the downstream effects are noticeable:
- A change in odour, particularly a stronger or different smell than usual
- Unusual discharge in colour, consistency, or amount
- Itching, burning, or general discomfort
- Increased susceptibility to irritation
If you notice a cluster of these signs, it's worth mentioning to a GP, since some causes (like bacterial vaginosis or a yeast infection) benefit from proper diagnosis rather than guesswork.
What actually helps maintain balance
The good news is that supporting pH balance doesn't require anything complicated:
- Wash externally only, with a pH-balanced, fragrance-free product designed for intimate skin β the vagina doesn't need internal cleansing
- Avoid douching entirely, regardless of what packaging promises
- Choose breathable underwear, ideally cotton, and change out of damp gym or swimwear promptly
- Consider your gut and vaginal microbiome together β the two are more connected than most people realise, which is part of why some people find probiotic support useful alongside topical care
- Be mindful after antibiotics, as this is a common window for imbalance
FAQ
Can diet affect vaginal pH? Diet influences the broader gut microbiome, which has some connection to vaginal flora, though the relationship is indirect rather than immediate. General gut health support is reasonable, but it's not a substitute for appropriate topical care or medical treatment when needed.
Does vaginal pH change with age? Yes. Oestrogen levels influence vaginal pH, so it naturally shifts during puberty, pregnancy, and particularly menopause, when lower oestrogen is associated with a higher (less acidic) pH.
Is a pH test something I can do at home? Over-the-counter pH testing strips exist, but they're not a substitute for clinical diagnosis if you're experiencing symptoms. They can be a useful general indicator, not a diagnostic tool.
Should I be worried if my pH fluctuates slightly? Some fluctuation is completely normal across the menstrual cycle and isn't cause for concern on its own. It's a persistent shift accompanied by symptoms that's worth paying attention to.
Laver's Wash is formulated to sit within the natural pH range of intimate skin, so your daily routine works with your body's balance rather than against it.