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

Hyaluronic Sea Serum

Hyaluronic Sea Serum

$88
$88 $0.00

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

Free shipping on all orders

30 day returns

inner glow club

login

Earn 88 points on this purchase.

create account

inner glow club

Earn 88 points on this purchase

login

|

create account

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.

learn more

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.

take the quiz
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

Find your nearest credo store
Earn rewards through recycling login

1 Product Recycled = 10 Credo Rewards Points

create account
Earn rewards through recycling

1 Product Recycled = 10 Credo Rewards Points

login

|

create account
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: 4.650069 / 5 from 723 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%): A significant amount of customers expressed satisfaction with how the product feels, describing it as great, smooth, hydrated, and rejuvenated.
  • Visible Difference (6%): Customers expressed satisfaction with the noticeable difference in their skin after using the serum.
  • Skin Health (31%): A substantial number of customers brought up that this product makes their skin feel rejuvenated and healthy.
  • Hydration Level (6%): Customers appreciated the super hydrating, plumping, and smoothing feature of this product.
  • Absorption Speed (8%): Customers loved how quickly this serum absorbs into the skin. (100% agreement) (9 out of 20 reviews)

Review topics: ["size","absorbs","results","issues","ingredients","improvement","wrinkles","scent","weight","quality","fragrance","price","benefits","feels","texture","works","packaging","design","formula","use","skin","looks","amount","lines","glow","hydration","bottle","difference","face","oil"].

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

Hyaluronic Sae Serum

"Works great!! I have used this product for over a year and I absolutely love it. I have noticed that my wrinkles around my mouth and eyes are getting harder to see. Its like a face lift in a bottle!! I have recommended this product to my friends! Thank you! Finally something I like and something that works for me! I don even wear foundation anymore!"

— Cindy K. (5/5)

The MVP of my skincare routine

"I absolutely LOVE this product. Living by the beach and surfing 3-4x per week, this is a lifeline. It's the best product for my skin and climate. It's lightweight, hydrating, smells great. It restores hydration after being in the ocean for several hours at a time. Also great whether it's dry or hot, basically the 2 rotating climates where I live. My skin barrier is much improved after using this regularly and I actually don't need a heavy cream or moisturizer anymore because my skin is so plump and dewy. I will be buying this product for life!"

— Krista G. (5/5)

Hearts

"Very hydrating. Love! Helps with fine lines and wrinkles."

— NICOLE R. (5/5)

Can live without it

"I have used the serum virtually every day for more than 5 years and just can live without it. I always have a back up bottle in my closet so Im never without it. My skin is extremely dry and sensitive. This ensures that my skin stays hydrated with absolutely no irritation. My no 1 must have!!!"

— Sue T. (5/5)

A Must Try!

"The first time I tried the Sea Serum was with my subscription of the Body Oil and a sample of the serum was included. I love how my face feels when I use twice a daily under my moisturizer. My skin absorbs it and it never feels sticky. Since Im very hesitant to try new products, I find that samples in subscription orders are a great way to try first. Thank you!"

— Sheila A. (5/5)

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)

Nice

"I was hesitant because of the price. I use it daily and will reorder"

— Jennie S. (5/5)

Just wonderful

"I got the tester size of the Hyaluronic Sea Serum and quickly fell in love with it. It has visibly made my skin brighter, softer and more firm. I wish the price tag wasn't as painful but I can't find anything else that is remotely similar to this product!"

— Julia G. (5/5)

Oh yes!

"Have only been using for a couple of days but I see a noticeable difference on my face. My skin is hydrated but also like a little more plump in the best way. Love this product already!"

— Bella R. (5/5)

Favorite

"Always have this in my medicine cabinet. It soothes when everything else burns. It absorbs and feels very moisturizing on the face and neck. I do subscribe to this every 3 months, and I seem to have found the correct balance‚Äînot too much or too little. This will always be a fave of mine! Smooths and softens skin, & a switch up in makeup for mature women, seen here with my no makeup look (aside from eyebrows/lashes/lips. Just a tiny bit of a highlight atop my cheekbones, nose, forehead. I take a supplement at the direction of my dermatologist, that I believe makes me look ‚Äútan‚Äù. I have a natural glow from an inside sunscreen ©. Its my coveted natural secret. Thanks!"

— Aly F. (5/5)

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