Can Lube Cause Infections?
The facts on lube and vaginal infections — how certain ingredients disrupt the microbiome, which formulas to avoid and how to choose a lube that protects rather than harms.
Shop LubeThe vagina maintains a finely tuned pH between 3.8 and 4.5 and relies on beneficial bacteria — primarily lactobacilli — to protect against harmful pathogens. Lubricants that alter this pH, introduce sugar-like substances or damage the vaginal tissue barrier can tip this balance, increasing susceptibility to bacterial vaginosis, yeast infections and UTIs.
How Lube Can Increase Infection Risk
There are two primary mechanisms through which lube ingredients can contribute to infection risk. The first is pH disruption. A lubricant with a higher pH than the vagina (above 4.5) can kill off the beneficial lactobacilli bacteria that keep harmful pathogens in check. Without these protective bacteria, bacterial vaginosis becomes more likely.
The second mechanism is osmolality — a measure of how concentrated a substance is relative to body fluids. High-osmolality lubricants (those more concentrated than vaginal fluid) draw moisture out of vaginal cells, damaging the tissue barrier. This makes it easier for pathogens to enter the body. The World Health Organization recommends that lubricants have an osmolality below 380 mOsm/kg for internal use.
The Glycerin Problem
Glycerin is found in the majority of commercially available water-based lubricants. It is chemically similar to glucose and acts as a food source for Candida — the fungus responsible for yeast infections (thrush). Research has consistently linked glycerin-containing lubricants to increased rates of thrush and bacterial vaginosis in susceptible individuals. Studies at UCLA found oil-based lubricants increased yeast infection risk by 32 per cent and BV risk by 22 per cent. For anyone prone to vaginal infections, glycerin-free lubricant is strongly recommended.
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Shop NowIngredients to Avoid If You Are Prone to Infections
Glycerin and glycerol. Present in most commercial water-based lubes. Feeds yeast and increases BV risk. Specifically seek out glycerin-free formulas.
Sorbitol and other sugar alcohols. Similar mechanism to glycerin — create a feeding environment for Candida. Check labels for any ingredient ending in "-ol" or "-ose."
Fragrances and essential oils. These irritate vaginal tissue directly and disrupt the microbiome. Always choose unscented lubricants for vaginal use.
Parabens. Preservatives that can irritate tissue. Look for paraben-free on the label.
Chlorhexidine gluconate. Used as an antimicrobial but kills beneficial bacteria as effectively as harmful ones. Avoid in lubricants used vaginally.
Petroleum-based ingredients. Linked to BV and difficult to clear from vaginal tissue. Avoid any product containing mineral oil or petroleum derivatives.
Infections From Lube: When to Seek Help
If you experience unusual discharge, persistent itching or burning, odour or pelvic discomfort after using a new lubricant, these may indicate a secondary infection triggered by the formula. Stop using the product and clean the area gently. If symptoms persist beyond 48 hours or worsen, consult a sexual health clinic or GP. Bacterial vaginosis and yeast infections are both treatable — the most important step is not ignoring symptoms.