Supersize Hyaluronic Acid Serum 100ml: Is the Big Size Worth It?
By Clinically-Effective, Luxurious Skincare & Bodycare | Naturium | Published: 2026-10-16
Category: Product Reviews
The 100ml Supersize Hyaluronic Acid Serum cuts the cost per milliliter versus the 30ml, but only if you'll finish it. Here's how to decide.
Quick answer
Buy the 100ml Supersize Hyaluronic Acid Serum if you already use a hyaluronic acid serum most mornings and evenings and will finish it within about a year. If you're new to HA, have reactive skin, or only apply it a few times a week, the 30ml size is the smarter first purchase because you'll actually use it up before it loses its freshness.
What you actually get in the 100ml size
The Supersize Hyaluronic Acid Serum is the same formula as the 30ml version, just three times the volume. It contains 2% multi-molecular hyaluronic acid and is described as non-tacky, leaving skin feeling plump and smooth. The catalog lists it at USD 24.00, compared with a USD 32.00 comparison price, so the value case rests on volume and price per milliliter rather than a different formula.
- Same 2% multi-molecular HA formula as the 30ml
- Non-tacky finish designed for layering under other skincare
- Catalog price USD 24.00 vs USD 32.00 comparison price
- Three times the volume of the standard 30ml size
How to calculate your real cost per use
A 100ml bottle only saves money if you finish it. Estimate your usage: a typical pump or dropper of serum is roughly 0.5–1ml, so two uses a day lands around 1–2ml daily. At that pace, 100ml lasts roughly 50–100 days of twice-daily use. If you only apply it a few times a week, that same bottle can stretch past a year, which is where freshness and storage start to matter more than price.
Shelf life and storage trade-offs
The catalog does not list a specific shelf life or a PAO (period-after-opening) symbol for this serum, so treat that as an unknown rather than a guarantee. As a general rule, keep any opened water-based serum away from direct sunlight and heat, and store it in a cool, dry spot. If you know you're a slow user, the smaller 30ml size reduces the risk of a half-used bottle sitting around for months.
How the Supersize fits into a full routine
Because the Supersize is a hydration step, not an exfoliant or brightening treatment, it pairs cleanly with other Naturium products rather than replacing them. If your goal is smoother texture or fewer blackheads, the Glycolic Acid Toner handles exfoliation with 10% glycolic acid and 5% witch hazel. If uneven tone or dark spots are your priority, the Tranexamic Acid Serum combines 2% tranexamic acid, 2% acai berry extract, and 2% vitamin C. The Supersize HA serum supports those steps by adding hydration, which is why a larger size makes sense if you use it daily alongside them.
Decision rules: Supersize vs 30ml
- You already use HA serum daily: If you apply a hyaluronic acid serum twice a day and know the formula suits your skin, the 100ml size reduces how often you reorder and lowers your cost per use. Choose the Supersize.
- You're new to hyaluronic acid: If you haven't used this serum before, start with the 30ml to confirm it layers well under your moisturizer and sunscreen without pilling. Start small, then upsize once you're sure.
- You apply it a few times a week: Occasional use means a 100ml bottle can sit open for many months. Without a listed shelf life, that's a real risk to formula freshness. Stay with 30ml.
- You share skincare with a partner or household: Two daily users can finish 100ml in roughly a month, which makes the larger size genuinely economical rather than a storage risk. The Supersize pays off for shared routines.
Key product facts
- Supersize Hyaluronic Acid Serum - 100ml: Award-winning #1 bestseller Hyaluronic Acid Serum now 3x bigger, formulated with 2% multi-molecular Hyaluronic Acid and clinically proven to deliver instant and lasting hydration. If you already know this formula works for you, the 100ml size means fewer repurchases and a lower cost per use over time.
- Glycolic Acid Toner: 10% Glycolic Acid exfoliator with 5% Witch Hazel that works as a pore-minimising toner, reducing blackheads and fine lines and supporting smoother, brighter skin without drying it out. A useful pairing if you want exfoliation alongside hydration; the HA serum hydrates while the toner handles texture.
- Tranexamic Acid Serum: Gel treatment with 2% Tranexamic Acid, 2% Acai Berry extract, and 2% Vitamin C that targets hyperpigmentation, dark spots, and uneven skin tone. If brightening is your main concern, this is the treatment to add; the Supersize HA serum supports it as a hydrating layer rather than a replacement.
Who should buy the Supersize
Best for
- Daily hyaluronic acid users who already know this formula works for them
- Households where two people share the same serum
- Shoppers who want the lowest cost per milliliter and don't mind a larger bottle
Not for
- First-time hyaluronic acid users still testing whether the formula suits their skin
- Anyone who applies serum only a few times a week and won't finish 100ml within about a year
- Shoppers who prefer travel-friendly or minimal packaging
