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OSEA

Hyaluronic Acid C Serum.

OSEA
Hyaluronic Acid C Serum
Serums

About this product

A marine-based serum with hyaluronic acid in two molecular weights, seaweed extract, snow mushroom, and volcanic marine ferment, designed to hydrate and minimize fine lines.

Guru Score

83%

Yay

Early verdict · Few reviews so far
3Gurus
2Yay
1Mixed
0Nay

What they liked

  • Absorbs easily without heaviness
  • Fragrance-free luxury formula
  • Hydrates and plumps skin

What they flagged

  • Expensive at full price

What the gurus are saying

This marine serum hydrates like ocean snail mucin without the snail, thanks to hyaluronic acid paired with seaweed, snow mushroom, and volcanic ferments that work together for a plump, bouncy skin feel. Testers consistently note it smooths fine lines and absorbs well, though it performs best on damp skin to activate the hyaluronic acid. Some love the value compared to pricier luxury brands, while others prefer more affordable K-beauty alternatives.
Synthesized from 3 expert reviews · most recent take December 2024

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored
Mixed
"This is a nice hyaluronic acid serum. I love marine ingredients, algae ingredients work really well for my skin, but it's an expensive product, 88 dollars for one fluid ounce, it will be 44 dollars in this sale. If you enjoy it, pick it up at that price, but for me I stopped buying this kind of product because we can find so many better prices in K beauty."
Yay
"This is the Hyaluronic C Serum in this nice little glass package. This is one of my favorites if you're looking for skin support and hyaluronic acid hydration. This almost feels like a cactus serum that I've used before but this easily absorbs into the skin and it really helps with fine lines and wrinkles and hydration and it makes the skin glow. The fact that this is fragrance free, we normally don't see a lot of luxury priced products being fragrance free nor do we see them being made in California and made ethically and sustainably."
Top Pick: seaweed serum
All 2 takes from Cassandra Bankson
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"This is the Hyaluronic C Serum in this nice little glass package. This is one of my favorites if you're looking for skin support and hyaluronic acid hydration. This almost feels like a cactus serum that I've used before but this easily absorbs into the skin and it really helps with fine lines and wrinkles and hydration and it makes the skin glow. The fact that this is fragrance free, we normally don't see a lot of luxury priced products being fragrance free nor do we see them being made in California and made ethically and sustainably."
15 Best and Worst Hyaluronic Acid Products and How They Work
"This right here is what LeMaire wishes they could be, but it's a fourth of the cost. This is a hyaluronic C serum that comes from the coast of California, and this is 88 bucks, so it's not cheap, but compared to LeMaire, it is much cheaper. This is from OSEA, and it has two different forms of hyaluronic acid at two different molecular weights, but it's also got seaweed in it from the California coastline as well as snow mushroom. This is much less expensive and it works so well. If you could imagine ocean snail mucin without the snail mucin, like it really reminds me of a snail mucin product the way it hydrates, the way it's kind of gelatinous, but it still absorbs into the skin. This is so good, but it's completely vegan and cruelty-free. A lot of the benefits that I'm getting from this product actually come from the fact that there are other ingredients in here like seaweed extracts and the snow mushroom that is really doing a lot for the skin. But in addition to those two forms of hyaluronic acid, this actually hydrates and actually plumps the skin. This absorbs and it feels so good. This is a beautiful formula to put into your routine, especially if you're looking for some antioxidant protection."
Yay
"Hyaluronic acid is like a powerhouse ingredient for hydration. However, I do feel like I see the best effects when I apply it to damp skin because hyaluronic acid needs water in order to activate and pull the water into your skin. [...] This is so luxurious the way that it just makes your skin look and feel so bouncy, so hydrated, so plump, it's insane. This serum is clinically proven to minimize the appearance of fine lines and wrinkles. It's also clinically proven to increase hydration, which it sure does, and it's going to give you a more lifted and firm look to the skin, which I love so much, especially before makeup. In addition to hyaluronic acid, this has Japanese mirror seaweed in it, volcanic marine ferment, snow mushroom, it is like a little powerhouse serum. I love [...] how my skin looks after I use this, and I've been using it every day."
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Frequently asked.

What is OSEA Hyaluronic Acid C Serum?

A marine-based serum with hyaluronic acid in two molecular weights, seaweed extract, snow mushroom, and volcanic marine ferment, designed to hydrate and minimize fine lines.

Is OSEA Hyaluronic Acid C Serum worth it?

Mostly yes. 2 of the 3 gurus who reviewed it give it their stamp of approval, for a Guru Score of 83%.

What is OSEA Hyaluronic Acid C Serum's Guru Score?

OSEA Hyaluronic Acid C Serum holds a Guru Score of 83%. That is our read on how warmly the experts talk about it, based on the verdicts of 3 expert reviewers we have collected. At least one expert has named it a Top Pick in its category.

Who is OSEA Hyaluronic Acid C Serum best for?

OSEA Hyaluronic Acid C Serum is generally suited to dry skin and mature skin.

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