Hyaluronic Acid Serum — Austin Bloome
Facial Care · Multi-Weight Hyaluronic

Skin that feels hydrated at 6pm, not just 8am.

Four weights of hyaluronic acid, one drink of water for flat, tired skin. The different sizes hydrate at different depths, so skin looks plumper and bouncier right after you press it in — and stays comfortable instead of tight. Gentle enough for every trimester.

  • Plumper, bouncier-looking skin you can see right after it sinks in
  • Four hyaluronic acid weights hydrate at different depths, not just the surface
  • The fill-from-within for flat, tired, tight-feeling skin — comfortable, not stripped
  • Lightweight, fragrance-free and gentle enough through every trimester
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  • Made in the USA
  • 4 Weights of HA
  • 100-Day Money-Back Guarantee
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🌾Gluten-Free🥛Lactose-Free⚖️Hormone-Free🚱Alcohol-Free🐰Cruelty-Free🤍Fragrance-Free🧪Paraben-Free⚗️Phthalate-Free🫧Sulfate-Free💠Silicone-Free🛢️Mineral Oil-Free🇺🇸Made in USA🌾Gluten-Free🥛Lactose-Free⚖️Hormone-Free🚱Alcohol-Free🐰Cruelty-Free🤍Fragrance-Free🧪Paraben-Free⚗️Phthalate-Free🫧Sulfate-Free💠Silicone-Free🛢️Mineral Oil-Free🇺🇸Made in USA🌾Gluten-Free🥛Lactose-Free⚖️Hormone-Free🚱Alcohol-Free🐰Cruelty-Free🤍Fragrance-Free🧪Paraben-Free⚗️Phthalate-Free🫧Sulfate-Free💠Silicone-Free🛢️Mineral Oil-Free🇺🇸Made in USA
Why it works

Flat, tired skin is thirsty skin. This fills it from within.

01

Your skin looks flat and dull and feels tight, especially by afternoon.

Hyaluronic Acid Serum

Hyaluronic acid holds many times its weight in water in the skin — four different weights reach different depths, so the surface looks fuller and feels comfortable.

02

Single-HA serums only seem to hydrate the very top layer.

Hyaluronic Acid Serum

The mix of molecular weights here spreads the effect deeper, for a more complete, longer-lasting plump.

03

You want an effective serum you don't have to second-guess while pregnant.

Hyaluronic Acid Serum

It's a simple, fragrance-free hyaluronic serum — gentle and one of the products we've cleared to carry maternal support.

  • 💧

    4 Weights

    Hyaluronic acid that hydrates at different depths.

  • 🫧

    Plumps

    Bouncier, filled-out look right after it sinks in.

  • 🤍

    Fragrance-Free

    Nothing added to irritate reactive skin.

  • 🤱

    Trimester-Safe

    Gentle enough to use through pregnancy — check with your provider.

Using Hyaluronic Acid Serum
The ritual

Your ten-second morning step

  1. 1

    Dampen

    Apply to clean, slightly damp skin so the HA has water to hold.

  2. 2

    Press

    Smooth a few drops over face and neck, morning and night.

  3. 3

    Seal

    Follow with a moisturiser to lock the bounce in.

What's inside Hyaluronic Acid Serum
Full transparency

What's inside — and what's not

Four forms of hyaluronic acid — crosspolymer, sodium hyaluronate, acetylated and hydrolysed — in a light water base with glycerin and propanediol. Fragrance-free, lightweight, nothing extra.

Never✕ Fragrance✕ alcohol✕ silicones✕ parabens✕ sulfates
The fill-from-within

For skin that looks flat and feels tight

Bouncier, plumper, comfortable — see why the multi-weight hyaluronic serum becomes the ten-second step people don't skip, bump or no bump.

  • 💧 4 Weights of HA
  • 🤍 Fragrance-Free
  • 🐰 Cruelty-Free
  • 🇺🇸 Made in the USA

What people actually say.

🛡️

100-Day Money-Back Guarantee

Use it morning and night for 100 days. If your skin doesn't look plumper and feel more comfortable, reach out for a full refund — bottle included.

Applies after 21 days of consistent use, once per product, and covers the product price — not shipping. See our Refund Policy for details.

💳

Pay Over Time

Split it into 4 interest-free payments with Afterpay, or use Shop Pay Installments — chosen at checkout.

🚚

Made Fresh, Shipped Tracked

Freshly made for you in 1–5 business days, then shipped tracked from the USA — typically at your door in 5–9 business days.

The Honest Comparison

Why multi-weight HA beats a single one

Most hyaluronic serums use one weight and hydrate only the surface. This uses four, reaching different depths for a fuller, longer plump.

What matters ✦ Austin Bloome Multi-Weight HA Serum Single-weight HA serum
Four HA weightsDifferent molecular sizes hydrate at different depths ✓ ✕
Visible plumpA bouncier, filled-out look you can see soon after applying ✓ Sometimes
Fragrance-freeNothing added to irritate reactive or pregnancy skin ✓ Sometimes
Pregnancy-friendlySimple, gentle formula — one we've cleared for maternal support ✓ Sometimes
Clean baseNo alcohol, silicones, parabens or sulfates ✓ Sometimes
Made fresh in the USAMade to order and shipped tracked, not mass-produced overseas ✓ Sometimes
4 weights of HAFragrance-freeMade in the USA

One bottle, used twice daily, lasts around two months.

Water, propanediol, glycerin, sodium hyaluronate crosspolymer, sodium hyaluronate, sodium acetylated hyaluronate, hydrolyzed sodium hyaluronate, pentylene glycol, xanthan gum, sorbitan oleate decylglucoside crosspolymer, phenoxyethanol, ethylhexylglycerin.

  • Four hyaluronic acid formsSodium hyaluronate crosspolymer, sodium hyaluronate, acetylated sodium hyaluronate and hydrolysed sodium hyaluronate — four different molecule sizes.Big molecules hold water at the surface, small ones settle in further down. Using four sizes is why the plump looks fuller and lasts longer than a single-weight serum.
  • GlycerinA gentle humectant — an ingredient that pulls water toward your skin.Adds a second layer of moisture-attracting power alongside the hyaluronic acid, and it's one of the most reliable, best-tolerated skincare ingredients there is.
  • Propanediol & pentylene glycolTwo plant-derived hydrating solvents.They help the actives spread and absorb evenly, which is what keeps the serum feeling watery and light instead of tacky.
  • Xanthan gumA natural thickener made by fermenting plant sugars.Gives the serum a light, even drop so it spreads across your face instead of running off your fingers.
  • Phenoxyethanol & ethylhexylglycerinA gentle, widely used preservative pair.They keep a water-based serum safe and fresh in a steamy bathroom for its whole life. No fragrance and no essential oils anywhere in the bottle.

Questions, answered

What does this actually do?
Four weights of hyaluronic acid hold water at different depths in the skin, so the surface looks plumper and bouncier and feels comfortable instead of flat and tight. It's a cosmetic hydrating serum, not a treatment for any skin condition.
What is hyaluronic acid, in plain words?
It's a moisture magnet your skin already makes. Each molecule holds many times its own weight in water, so applying it puts water where skin has run dry. This serum uses four different sizes so the hydration lands at different depths rather than only sitting on top.
Is hyaluronic acid serum good for oily skin?
It's one of the best choices for it. This is a water-light serum with no oils at all, so it hydrates without adding any richness. Oily skin is often dehydrated skin working overtime, and giving it water instead of oil is exactly the fix.
Will it help skin that's dry and flaky?
It gives dry skin the water it's missing, which is half the job — the other half is sealing it in. Apply the serum to slightly damp skin and follow with a moisturiser every time. Skipping that step is the single most common reason people think a hyaluronic serum isn't working.
Will it make my skin greasy?
No — it's a lightweight, watery serum that absorbs in seconds and layers well under makeup. No film, no shine.
How many drops, and where does it go in my routine?
Two to three drops covers the whole face and neck, morning and night. It goes on first, over cleansed damp skin, before your moisturiser and any oil — think thinnest to thickest.
Do I really need to apply it to damp skin?
It helps, genuinely. Hyaluronic acid draws in water, so on damp skin with a moisturiser on top it pulls moisture into the skin and keeps it there. On dry skin in dry air with nothing sealing it, it simply has less water to work with.
Does it replace my moisturiser?
No — it works with one. This serum brings the water; your moisturiser is the lid that keeps it there. Always follow with one.
Can I layer it with vitamin C or a retinol serum?
Yes. With vitamin C, apply this after, to add hydration back. It also sits happily under richer treatments, and if you use a retinol at night, hyaluronic acid on top helps offset any dryness.
Will it still work in dry winter air?
Yes, as long as you seal it. Apply to damp skin and lock it in with a moisturiser straight after — in dry air, that lid matters more than ever.
When will I notice a difference?
The plump-and-bounce look is often visible the same day; the lasting, less-tight comfort builds with consistent twice-daily use.
How long does one bottle last, and how should I store it?
Around two months with twice-daily use, because a few drops cover the whole face. Keep the cap on and store it somewhere cool and shaded — direct sun and heat are what wear a serum down. The multi-bottle bundle keeps your routine stocked and spreads the cost over a longer stretch.
Is it gentle enough for sensitive skin — and safe during pregnancy or breastfeeding?
Yes on both counts. Hyaluronic acid is one of the best-tolerated skincare ingredients there is, and this serum is fragrance-free with no essential oils and a short, simple ingredient list — which is why it's one we've cleared to carry maternal support through pregnancy and nursing, alongside the rest of our Pregnancy collection. With sensitive skin, patch test on your jaw for a couple of nights first, and because every pregnancy is different, check with your provider if you have specific concerns.
Is it worth it — and what if my skin doesn't like it?
A bottle runs about two months and holds four weights of hyaluronic acid hydrating at different depths — surface comfort and deeper plumpness at once — fragrance-free and made fresh in the USA. Use it morning and night, and if your skin doesn't look plumper and feel more comfortable, reach out for a full refund under our 100-Day Money-Back Guarantee, bottle included. You get to judge it on your own skin, not on a promise.