OSEA

Hyaluronic Sea Serum

Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
Hyaluronic Sea Serum
alias
OSEA

Hyaluronic Sea Serum

Hyaluronic Sea Serum

A lightweight, moisture-boosting serum that smooths wrinkles and fine lines while replenishing dry, depleted skin.

Regular price $88
Sale price $88 Regular price
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Hyaluronic Sea Serum

1 oz / 30 ml
$88
  • Overview
  • Choosing your shade
  • How to use
  • Ingredients
  • Sustainable Packaging
  • About the brand
Highlights

Suitable for

All skin types.

Why we stand behind it

This fast-absorbing, anti-aging serum is clinically proven to smooth the appearance of all lines and deliver a lifted, firmer look. Two molecular weights of hyaluronic acid, seaweed, and snow mushroom, work together to restore and maintain optimal moisture levels, keeping your skin hydrated, plump, and dewy any time of day. Clinically and dermatologist tested.

Clinically Shown to*:
- Instantly increase hydration
- Minimize the look of lines & wrinkles in 2 weeks
- Visibly improve skin firmness & elasticity in 2 weeks

After 2 weeks*:
100% agreed skin felt softer and smoother
97% agreed skin felt more supple & elastic
93% agreed skin felt firmer & bouncy

After 4 weeks*:
97% agreed it minimized the look of lines & wrinkles
90% agreed expression & emerging lines appear less visible

*Based on a third-party clinical study conducted over 4 weeks on 30 women ages 43-64 (including; expert skin grading, instrumental measurements & consumer perception study).

Key ingredients

Japanese miru seaweed: Replenishes and balances the skin’s natural moisture level for healthy, hydrated skin.
2X hyaluronic acid: High and low molecular weights work synergistically to boost hydration, fullness and firmness of skin.
Volcanic marine ferment: This unique marine ferment effectively plumps and smooths fine lines.
Snow mushroom: Forms a hydration layer on skin to seal in moisture.

this product meets

The Credo Clean Standard™

Every product we offer meets our industry leading standards for safety and sustainability.

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This product is

Cruelty Free

Sustainable Packaging

Vegan

Gluten Free

Fragrance Free

Alcohol Free

Paraben Free

Non GMO

What is an undertone?

An undertone is the color beneath the surface of your skin, which never changes (even with a tan). There are three types of undertones:

Pink/Cool

I see red or pink undertones around the perimeter of my face and neck.
My skin burns easily, but barely tans.
My skin looks better in silver jewelry than gold.

Neutral

I see both pink and yellow undertones around the perimeter of my face and neck.
My skin sometimes burns and sometimes tans.
My skin looks good in both gold and silver jewelry.

Yellow/Warm

I see yellow or golden undertones around the perimeter of my face and neck.
My skin rarely burns, but tans easily.
My skin looks better in gold jewelry than silver.

Find your shade match

Take our 1 minute quiz and get matched to real people with your skin tone and type.

Usage

After cleansing, apply Hyaluronic Sea Serum over face. Allow to absorb.
Seal in with OSEA moisturizer of your choice.
Use morning and night.

Pro-tip

For added hydration, mist face with Sea Minerals Mist before applying.

Full ingredient list
Water / Aqua / Eau, Codium Fragile Extract, Betaine, Sodium Hyaluronate, Tremella Fuciformis Sporocarp Extract, Bacillus Ferment, Hydrolyzed Hyaluronic Acid, Glycerin, Sodium Benzoate, Potassium Sorbate, Citric Acid, Lonicera Japonica (Honeysuckle) Flower Extract, Lonicera Caprifolium (Honeysuckle) Flower Extract, Sodium Copper Chlorophyllin. *Please be aware that ingredient lists may change or vary from time to time. Please refer to the ingredient list on the product package you receive for the most up to date list of ingredients.
Help us end beauty packaging waste

We co-founded the nonprofit Pact to demystify how to recycle your beauty packaging empties and divert waste from landfills.

How to recycle your empties

1. Disassemble and clean all components

2. Pick the right disposal bin

3. Drop off your empties at your nearest Pact bin

Earn rewards through recycling login

1 Product Recycled = 10 Credo Rewards Points

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Earn rewards through recycling

1 Product Recycled = 10 Credo Rewards Points

OSEA

Inspired by her grandmother’s lifelong love of the sea, Jenefer Palmer set out to share her passion through a plant-based skin care line infused with elements of the ocean. Distraught by the harmful chemicals she found in other products, Palmer resolved to craft her formulas with safer, nourishing ingredients.
While OSEA has now expanded into a world-renowned skin care line, their commitment has stayed the same—producing effective, wholesome products as pure as the ocean itself.

SHOP ALL OSEA

Overall rating: 4.647309 / 5 from 706 reviews.

AI Generated Review Summary

This serum is highly regarded for its fast absorption, hydrating properties, and visible anti-aging results. Customers report significant improvements in skin hydration, smoothness, and a lifted, firmer look. While some have mixed feelings about the scent and dropper, the overall consensus is positive regarding its effectiveness and skin appearance.

Summary topics

  • Skin Feel: 20%
  • Visible Difference: 6%
  • Skin Health: 31%
  • Hydration Level: 6%
  • Absorption Speed: 8%

Review topics: ["acne","breakouts","ingredients","scent","size","fragrance","spots","retinol","redness","wrinkles","results","dryness","pores","eyes","skin","cleanser","weight","improvement","glow","effect","quality","residue","hydration","mask","benefits","value","appearance","issues","looks","complexion"].

Review highlights

  • "It is lightweight, absorbs quickly, and makes my skin feel smooth and soft."Jennifer R.
  • "Osea always has the best quality and my skin looks so nice."Holly S.
  • "This serum feels so nourishing and makes my skin look dewy."Gina E.

Reviews

Awakens skin

"This serum absorbs quickly into the skin, leaving a fresh feeling, but not tight. I had used previously and tried others but came back. Now I follow the setum with their night cream. Delightful!!"

Elaine J. (5/5)

Really works!

"New to OSEA and tried the sea serum. It really works! I am 68 years old and use this once a day after cleansing my face. My skin on my face looks firmer. No kidding! Skin is smoother looking. I highly recommend this product."

Lucya (5/5)

Wonderful product

"I purchased the 1 Oz. Bottle. It is a very small vial. How long should the 1oz bottle last if I use it morning and night? Right now, I am using just a very little bit in the dropper, as it does not seem to release very well out of the dropper. I would guess my usage to be less than pea size."

Cheri (5/5)

Poorly made serum

"Omg I keep purchasing from trusted skincare brands and getting bad quality products. Osea how could you. Like others have said this serum will dry out your skin. It doesn't absorb into the skin, it sits on top of it. It will flake off through out the day and make it difficult to add make- up under eyes. I will say the bottle is cool. This was such an expensive purchase - do not buy this product. I'm going to have to place it only on specific areas in order to try and make use out of it. Ugh. At least I'm not allergic to it."

Bee (2/5)

Excellent

"This product has made my skin soft and restored like no other. I love it! By the way, I'm 74."

Terrye B. (5/5)

Smells like a dead animal

"I usually think people are exaggerating when they say a skincare product smells awful, because Ive never encountered that. Ive thought scents were not great, but not offensive. Until now. I thought I would splurge on myself and try OSEA. I got 3 things from Ulta, one of them being the hyaluronic sea serum. Never in my life have I smelled something so foul from a skincare line. The other products smell pleasant. The serum smells like a dead animal. Not earthy, not like the sea, not like fish, but a dead animal. Disgusting. I wanted to gag when putting it on my face. $88 dollars to smell like a dead animal is absolutely beyond unacceptable. I would not recommend this"

Samantha W. (1/5)

My everyday

"Use it with my day cream every day without exception"

Isabella J. (5/5)

Love it

"Face wash, toner and then this Sea Serum has just a nice feel. Love it."

Kelly B. (5/5)

Serum

"Very hydrating. Works beautifully with the Osea advanced protection cream"

Dawn C. (5/5)

A bit too sticky

"4. 5 stars because it definitely works just leaves a bit of a sticky residue"

Michalyn (4/5)

Q&A

I started to use this product last week and noticed some irritation. I know with hyaluronic acid it can be tricky. If anyone has suggestion to get my sensitive used to using this product please let me know.
Hello, This product works well when applied after a facial mist and followed up with a facial oil and/or moisturizer. For sensitive skin we recommend to start using this product slowing by introducing into the skincare regime 1-2x per week and building up your frequency from there. If there is true irritation or allergic reaction, we recommend to discontinue immediately. -Credo Client Experience