01

What hyaluronic acid actually is

Hyaluronic acid (HA) is a naturally occurring molecule in the body. It is a glycosaminoglycan, a long-chain sugar that holds large volumes of water and gives connective tissue its hydration, elasticity, and structural support. The body produces it in skin, joints, eyes, and vaginal tissue.

As oestrogen falls in perimenopause and menopause, the body's natural hyaluronic acid production in vaginal tissue drops too. The tissue becomes drier, thinner, and less elastic. Replacing hyaluronic acid topically restores some of what's been lost.²

The mechanism is straightforward:

• Hyaluronic acid attracts and holds water in the vaginal tissue
• It forms a thin barrier layer that protects the tissue from friction and irritation
• It supports tissue repair and elasticity over time, with sustained use

Unlike oestrogen, it doesn't act on hormone receptors. It works mechanically and structurally.

02

What the evidence shows

The evidence base for vaginal hyaluronic acid has grown substantially over the last decade.

Symptom relief

Randomised trials show vaginal HA significantly reduces dryness, itching, and dyspareunia (pain during sex) within 4–12 weeks of use.³ Effects are seen in both perimenopausal and postmenopausal women.

Comparison to vaginal oestrogen

Multiple head-to-head trials have compared HA to low-dose vaginal oestrogen. The most cited finding: HA produces comparable symptom relief to vaginal oestrogen for many women, particularly those with mild to moderate dryness.¹ For severe atrophy or significant tissue thinning, vaginal oestrogen still has an edge because it restores the tissue itself rather than supporting it externally.

Safety

HA is well tolerated. The most common side effects are mild and short-lived (transient stinging or warmth on application). It does not carry the hormone-related contraindications that limit who can use vaginal oestrogen, which makes it a useful option for women with a history of breast cancer or other hormone-sensitive conditions.⁴

Combination use

HA can be used alongside vaginal oestrogen, and some women benefit from using both, with HA providing daily comfort between oestrogen doses.

03

Which formulations work

Hyaluronic acid is sold in many forms, and they are not interchangeable for vaginal use.

Vaginal gels and ovules (effective)

The forms with the most evidence behind them. Applied directly to the vaginal tissue, usually 2–3 times per week initially, then 1–2 times per week for maintenance.

• Vaginal HA gels: dispensed with an applicator, similar to standard vaginal moisturisers
• HA ovules or pessaries: inserted into the vagina, dissolve overnight

These are typically marketed as moisturisers or treatments specifically for vulvovaginal symptoms. Look for products that list hyaluronic acid as the active ingredient at meaningful concentrations.

Vaginal lubricants with HA (useful at moment of sex)

HA-containing lubricants are useful for sex but, like all lubricants, are short-acting. They sit between a standard lubricant and a moisturiser in effectiveness. Worth pairing with a daily HA gel for full benefit.

Oral hyaluronic acid supplements (limited evidence)

Oral HA has weaker evidence for vaginal dryness specifically. Some studies suggest a benefit when combined with topical use, but oral HA alone is not a substitute for vaginal application. Save your money.

HA in skincare (irrelevant)

Hyaluronic acid in face creams and serums has nothing to do with vaginal dryness. Don't apply skincare HA to vaginal tissue: the ingredient base, fragrances, and preservatives are designed for facial skin, not the sensitive vulvovaginal mucosa.

Generic "intimate wash" products containing HA

Useful as a gentle cleanser, but not a substitute for a proper moisturiser. The contact time is too brief to deliver meaningful tissue effect.

04

How to use it

The way you use it changes how well it works.

Loading phase (first 2–4 weeks)

• 3 times per week, typically at night
• Use the full dose recommended by the product
• Apply lying down and stay lying for 5–10 minutes if possible, so the product stays in place

Maintenance phase (ongoing)

• 1–2 times per week, sustained indefinitely
• Skipping for several weeks reverses much of the benefit, so consistency matters

What to expect

• 2 weeks: some softening of dryness and irritation
• 4–6 weeks: noticeable improvement in lubrication and comfort
• 8–12 weeks: full effect, with most daily symptoms substantially better

Combining with other treatments

• With vaginal lubricants for sex: widely used, no interaction
• With vaginal oestrogen: widely used, often layered (alternate nights or different days)
• With systemic MHT: can be added without interaction
• With pelvic floor physiotherapy: complementary, particularly for women with both dryness and pelvic floor tension

05

Who hyaluronic acid suits best

HA is a particularly good fit for:

• Women with mild to moderate vaginal dryness who don't yet have severe atrophy
• Women who cannot use vaginal oestrogen (active or recent hormone-sensitive cancers, undiagnosed bleeding)
• Women who prefer to start with a non-hormonal option before considering hormones
• Women already on systemic MHT who need additional local support
• Women using vaginal oestrogen who want extra daily comfort between doses

It is generally not enough on its own for women with:

• Significant atrophy or tissue thinning visible to a doctor
• Pain during sex (dyspareunia) that hasn't responded to lubricants and moisturisers
• Recurrent UTIs driven by GSM
• Symptoms that have been present for years without treatment

In those cases, vaginal oestrogen is more likely to restore the tissue. HA can still be used alongside.

06

What to look for when buying

Hyaluronic acid products vary substantially in quality and formulation. A short buyer's checklist:

• HA as a named active ingredient, not just listed in the ingredients
• A concentration that does something: look for products that publish their concentration (typically 0.1–0.2% in vaginal gels)
• Free of fragrance, glycerin, parabens, and known irritants
• Designed for vaginal use specifically, not repackaged facial skincare
• From a brand willing to publish their clinical or safety data
• Australian TGA-listed where possible, which adds a baseline of quality control

Avoid products that bury HA as a marketing claim while the actual active ingredients are humectants or fillers.

07

When HA isn't enough

If you've been using hyaluronic acid consistently for 8–12 weeks and you still have:

• Pain during sex
• Persistent burning, itching, or irritation
• Vaginal discharge changes that suggest infection
• Recurrent UTIs
• Tissue that feels delicate, fragile, or tears with intercourse

It's time to see your GP. Vaginal oestrogen or DHEA is the next step, and the conversation usually goes well once you can tell them what you've already tried. Own Your Menopause Appointment: 5 Tips from a GP walks through how to make the appointment efficient.

08

The honest verdict

Hyaluronic acid is not a marketing fad. It has real evidence, a sensible mechanism, and a clean safety profile. For mild to moderate vaginal dryness, particularly in women who can't or prefer not to use hormones, it is a genuinely effective first-line option. For severe or long-standing dryness, it usually needs to be paired with vaginal oestrogen rather than used alone.

The two biggest mistakes women make with HA: using a product that contains it at marketing-level rather than meaningful concentrations, and treating it as a once-off rather than a consistent maintenance regimen. Used properly (a clinically-formulated vaginal gel or ovule, 2–3 times a week for a loading phase, then 1–2 times a week ongoing), the effect is reliable and the threshold to try is low.