Best Hyaluronic Acid Serums in Australia (2026)

How we scored this ranking.

Every product here was scored against the five-axis GLOW rubric published in how we review: performance carries 35% of the composite score for skincare, tolerability 25%, texture and application 15%, value 15%, and repurchase intent 10%. That last axis is the honest one, how many of the editors who tested a product would buy it again with their own money. Hydrators run a minimum six-week test period with a 48-hour patch test first, and each formula is cross-tested against at least one alternative in the same class to anchor the comparison.

For hyaluronic acid specifically, we grade the molecular-weight stack, the plumping effect at hour eight, and how each formula behaves in low humidity, the condition where a bad HA serum quietly works against you. Products that score below 6.5 are not published in rankings at all, and no brand can pay for a position.

The top three, up close.

The Ordinary Hyaluronic Acid 2% + B5 ($13) wins because nothing else touches its price-to-result. It stacks multiple molecular weights, adds B5 for moisture binding, and comes from the brand that made naming actives plainly and pricing them close to cost the whole pitch. Layer it under moisturiser, and never use it neat in dry conditions.

Aesop Hydra-Plump Hyaluronic Serum ($95) is the pick when texture matters as much as efficacy: lightweight, a clean ingredient list, and the glide the Melbourne-founded brand has traded on since 1987. You accept a smaller bottle at twice the price of equivalent formulas, and our Aesop review is clear-eyed about the trade: sensorial restraint, not clinical firepower, is what the brand does best.

SkinCeuticals HA Intensifier ($165) is the graduation product. Its proxylane peptide booster pushes results past what pure HA delivers, and the brand's distribution through Australian clinics means in-person consultation comes with the price tag. The pick once The Ordinary has taught you what your skin responds to.

How to choose an HA serum for Australian conditions.

Hyaluronic acid is a humectant: it binds water, up to 1000 times its own weight, and holds it in the skin's upper layers. The catch is that it binds water from whatever is nearest. In low humidity, a dry-air office or a plane cabin, a serum left neat on dry skin can pull moisture up from your dermis instead of from the air. Our hyaluronic acid guide calls this the biggest mistake in the category, and it is why low-humidity performance is one of the three things we score.

• Look for multiple molecular weights, listed as "multi-weight" or "multi-molecular". Larger molecules hydrate the surface, smaller ones penetrate deeper, and the stack is what delivers plumping at more than one layer of skin.
• Sodium hyaluronate on the label is not a downgrade. It is the salt form, with smaller molecules and better penetration, and most good formulas use both.
• Apply to damp skin, then seal with moisturiser within 60 seconds. Two to three drops is enough.
• HA suits every skin type, is particularly good for dehydrated, mature and post-procedure skin, and works morning and night under SPF and makeup. With no irritation ceiling, it can anchor a routine while stronger actives rotate around it.

For the full science, from what the molecule actually is to who benefits most, read what is hyaluronic acid.