Low-molecular-weight hyaluronic acid that goes beyond the surface, carried on a bio-identical tallow base β for skin that feels plumper, softer and more comfortable.
Hydration that doesn't evaporate
Water-based serums hydrate the surface and evaporate. This one is built on tallow β nearly identical to the lipids your skin makes itself β so it holds hydration in and carries low-molecular-weight hyaluronic acid deeper, for plumping that lasts.
Deep hydration and a plumper-looking surface β comfort that lasts.
"My skin feels super soft and hydrated. It glides on really smoothly."
β Brenda β β β β β
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Reviana Serum 15ml
$41.95 Β· or 4Γ $10.49 Afterpay
Most hydration sits on the surface
A water + glycerin serum will hydrate the very top layer of your skin, and then evaporate within an hour. Skin underneath stays dry β and the surface ends up tight again.
Tallow is the lipid your skin's barrier is built from
Its fatty-acid profile is nearly identical to your skin's own β so it doesn't sit on top, it integrates with the barrier. That locks the water in instead of letting it escape.
Low-MW hyaluronic acid travels deeper than standard HA
Standard HA molecules are too large to penetrate. The low molecular weight form in this serum reaches deeper layers where it draws and holds water β for plumping you can see and feel.
Plumper, softer skin from the first application β comfort that lasts.
Aqua, Glycerin, Azelaic Acid, Niacinamide, Benzyl Alcohol (and) Dehydroacetic Acid, Polyacrylate Crosspolymer-6 (and) t-Butyl Alcohol (and) Water, Panthenol, Tallow, Glycyrrhiza Glabra (Licorice) Root Extract, Parfum (Aloe & Cucumber LC), Asiaticoside (and) Madecassic Acid (and) Asiatic Acid, Sodium Hyaluronate, Bisabolol, Tocopherol (and) Helianthus Annuus (Sunflower) Seed Oil, Sodium Phytate (and) Aqua (and) Alcohol, Sodium Citrate, Aloe Barbadensis Leaf Extract.
As with any new skincare, patch test before full use.
After cleansing, apply 3β4 drops to face and neck. Press gently into skin β don't rub. Allow 30β60 seconds to absorb, then follow with Reviana Day Cream (morning) or Night Cream (evening).
A 15ml bottle lasts approximately 2β3 months with twice-daily use.
Processing: 1β3 business days + 3β5 business days NZ-wide.
Cost: $6.95, or free on orders over $75.
International: Available in NZ & Australia.
From the Founder
"The serum is where the real work happens. I wanted something lightweight that you'd barely feel, but that quietly transforms your skin over time."
Curtis Fairweather Β· Founder
We knew tallow alone wasn't enough for this. So we partnered with one of NZ's most awarded cosmetic formulators β someone who's spent decades developing for some of the world's largest billion-dollar beauty brands β then hired specialist in-house staff to manufacture every batch to the highest standard.
It's cosmeceutical skincare, built to a level the NZ tallow industry has never seen β and it all starts with the ingredient your skin already trusts.
Verified Reviews
Andrea β β β β β
Age 40 Β· Mar 2026
"Love the feel of it after I put it on. It absorbs really quickly."
Kerry β β β β β
Age 56 Β· Mar 2026
"Really light and refreshing β it's got that cucumber freshness. Goes into the skin seamlessly."
Brenda β β β β β
Age 69 Β· Mar 2026
"My skin feels super soft and hydrated. It glides on really smoothly."
CJ β β β β β
Age 46 Β· Mar 2026
"The texture is super-smooth and light. With tallow's oils being so similar to our own skin, it feels like it enhances rather than changes it."
Hyaluronic acid only works if it can reach the layers that need it. This serum pairs low-molecular-weight HA with a bio-identical tallow base β so the water draws deeper, and stays there instead of evaporating.
Lightweight enough to layer comfortably under both Day and Night Cream β and an SPF for daytime.
Low molecular weight HA penetrates beyond the surface where standard HA can't reach β deep, lasting plumping and hydration from within.
Bio-identical to your skin's own lipids. Integrates with the moisture barrier to lock hydration in, instead of sitting on top.
Provitamin B5 β a humectant that holds water in the skin while soothing surface tightness and supporting barrier comfort.
Supports barrier function and ceramide production β the structural fats that prevent moisture loss day to day.
What published ingredient research suggests with twice-daily serum use β and when.
Low-molecular-weight Hyaluronic Acid plumps the surface from the first application. Skin feels softer, more comfortable, less tight.
The tallow base integrates with the barrier, reducing trans-epidermal water loss. Skin holds hydration through the day instead of going tight by mid-afternoon.
Niacinamide and Panthenol continue supporting barrier ceramides. Skin's water-holding capacity improves β visible plumpness instead of surface plumpness only.
A restored barrier holds moisture on its own. Even without the serum, skin feels less prone to the dryness-and-tightness cycle. The kind of hydration you don't have to top up every hour.
Individual results vary. Timeline based on published studies for each key active at relevant concentrations.
Also by PrimalPantry
Tallow-first face skincare with added ceramides and peptides. Built for skin that struggles with mainstream products β same craftsmanship, same calm.
Formulated for sensitive skin Β· No tallow scent Β· Fragrance-free
Grab the set β NZ$196.80 NZ$214.80 Save $18.00
All four products Β· one ritual