Hyaluronic Acid ×2 + Sodium PCA + Organic Sunflower
Collagen Boost Serum
Collagen Boost Serum
Loved by 2,500+ customers
- Hyaluronic acid in two molecular weights
- Twenty-two ingredients, all doing one job
- Light enough to layer under any cream
- 100% natural origin · COSMOS Natural
Couldn't load pickup availability
Description
Description
A hydrating serum for skin that has gone flat and dry, built on three humectants rather than one. Hyaluronic acid appears twice in two molecular weights, with Sodium PCA and glycerin alongside, and organic sunflower seed oil to slow the water leaving again.
Well-hydrated skin looks plumper and fine lines look shallower, which is the effect this is after. Twenty-two ingredients, light and quick to absorb, and it sits happily under anything you put on next. 100% natural origin, 23% organic, certified COSMOS Natural by Ecocert.
How to use
How to use
Three or four drops on clean skin, morning and evening. Apply it while your face is still slightly damp if you can — humectants pull water from whatever's nearest, and damp skin gives them something to work with.
Always follow with a moisturiser or cream. A hydrating serum left bare in dry air can end up doing the opposite of what you wanted. Avoid direct contact with the eyes.
Who is it for?
Who is it for?
Dry and mature skin, and anyone whose face feels tight by mid-afternoon. It also suits people building a simple routine — this is the step that goes under everything else, and it doesn't compete with any active you're already using.
It's fragranced, with linalool, geraniol and citronellol declared on the INCI, all from natural essential oils. Patch test for 24 hours if scent is a trigger for you. Gluten free, nut free and vegan.
Shipping & returns
Shipping & returns
US orders ship with tracking. Most orders arrive within 2–5 business days after fulfillment. Enjoy free shipping on orders over $49.
If your order arrives damaged, defective, incorrect, or missing an item, please contact us within 30 days of delivery with your order number and photos where applicable. We'll review the issue and arrange a replacement or refund where appropriate.
Ingredients / INCI
How to use it
Three or four drops
On clean skin, morning and evening. A serum this light spreads further than you'd expect.
Apply while skin is damp
Humectants draw water from whatever is closest. Damp skin gives them something to hold onto.
Then a cream over the top
This isn't optional. A hydrating serum needs something above it to stop the water leaving again.
What's actually doing the work
Plumper-looking skin comes down to how much water it's holding. Here's how this compares on that.
| Feature | AVNOIA | Serum containing collagen | Basic hyaluronic acid serum |
|---|---|---|---|
| What holds water in the skin | Hyaluronic acid ×2, Sodium PCA, glycerin | Usually one humectant | Hyaluronic acid |
| Oil to slow water loss | Organic sunflower seed oil | Varies | Usually none |
| Ingredients in total | Twenty-two | Varies | Varies |
| Texture | Light, absorbs quickly | Varies | Often tacky |
| Layers under other actives | Yes, nothing to clash with | Varies | Yes |
| Suitable for vegans | Yes | Usually not | Varies |
| Natural-origin ingredients | 100% | Varies | Varies |
| Independent certification | Ecocert COSMOS Natural | Varies | Varies |
Comparison columns describe the category in general, not any specific brand.
What's inside and why it's there
Twenty-two ingredients, 100% of natural origin and 23% organic, certified COSMOS Natural by Ecocert. Gluten free, nut free and vegan, no GMO ingredients, recyclable packaging.
Hydrolyzed Hyaluronic Acid + Sodium Hyaluronate
Two sizes of the same humectant rather than one. The smaller fragments and the larger molecule hold water at different depths, which is why both are here instead of a single form.
Sodium PCA + Glycerin
Sodium PCA sits eighth on the list, with glycerin second. Three humectants working together hold more water than any one of them managing alone.
Sunflower Seed Oil
From organic farming, fourth on the list, with organic watercress and elder fruit extract further down. The oil is what slows the water escaping once the humectants have drawn it in.
Questions people ask before buying
No, and that's on purpose. Collagen molecules are far too large to pass through skin, so a serum containing them sits on the surface. It's also animal-derived, which rules it out of a vegan formula. What this serum does instead is hold water in the skin, and well-hydrated skin is what looks plump.
Skin that looks fuller and feels comfortable rather than tight, with fine lines looking shallower because dry skin exaggerates them. That's a hydration effect — visible quickly, and it depends on using it regularly.
Yes. Humectants draw water in and something has to stop it leaving again. In a dry room or a cold climate, a hydrating serum worn bare can pull moisture out of your skin rather than into it.
Both. There's no active in here that light affects and nothing that makes skin sun-sensitive, so it fits either end of the day.
Yes, and it's a sensible thing to pair with them. A hydrating layer underneath makes stronger actives easier for skin to tolerate. Nothing in this formula clashes with anything.
That's exactly where it belongs. Serum first, cream second — the serum brings the water and the cream keeps it there.
Yes. The light, fast-absorbing texture suits spa treatments and professional procedures, which is part of why it was formulated this way.
Powdery iris and violet over something musky and softly woody. Three allergens are declared on the INCI — linalool, geraniol and citronellol — all from natural essential oils.
No. Phthalates are synthetic raw materials, and the fragrance compositions used in our products are made from natural raw materials instead.
Put a cream over it
The serum brings the water in. Something needs to go on top to keep it there.
5% Urea + 2% Panthenol Body Cream
Why people stay with it
- Three humectants, not oneHyaluronic acid in two weights, with Sodium PCA and glycerin working alongside.
- Light enough to layerAbsorbs quickly and clashes with nothing, so it goes under whatever you already use.
- 100% natural originCertified COSMOS Natural by Ecocert, with 23% of the formula organic.
Made for your everyday routine
Thoughtfully formulated skincare and haircare designed to make your daily routine feel simple, effective and enjoyable.
Free shipping over $49