Shopping Bag
100% Money Back Guarantee

You can’t be sure of much in life, but after 22 years of incredible results we’re sure of this: OSEA works.

Try our products risk-free with our 100% Money-Back Guarantee.

Hyaluronic Sea Serum

Hyaluronic Sea Serum

Hyaluronic Sea Serum

150 Reviews
Size: 1 oz | Skin Type: All Skin Types

Concentrated moisture boosting, age-defying serum.

This lightweight, non-greasy moisture boosting serum smoothes wrinkles & fine lines and replenishes dry, thirsty skin. Hyaluronic Acid, nature’s most powerful moisture magnet, floods skin to deliver intense moisture that swiftly plumps for a more youthful, dewy glow. Hyaluronic Acid attracts up to 1,000 X its weight in water, strengthening the skin’s moisture barrier for visibly improved firmness and elasticity. A synergy of three molecular weights of Hyaluronic Acid and three organic Seaweeds work together to guarantee immediate, long-lasting hydration. Age-defying seaweed extracts boost skin with antioxidants, vitamins and minerals. This high performance serum absorbs instantly, leaving a velvety-soft, luminous finish.

Learn more about the benefits of hyaluronic acid for your skin on our wellness blog.

Learn More

How to Use

After cleansing and misting, apply two pumps to face, neck + decolleté. Use morning + night or anytime skin needs an intense moisture boost. Follow with OSEA moisturizer of choice.

Benefits


  • Lightweight

  • Moisturizing

  • Age Defying

  • Reduces Redness

Star Ingredients

  • Gigartina Skottsbergii Extract a red algae that deeply hydrates skin and promotes the appearance of youthful volume and firmness. Helps protect skin from external aggressors such as wind, dry climates and air pollution. Rich in polysaccharides, vitamins and minerals.
  • Undaria Pinnatifida Extract a brown marine algae rich in iodine, iron, potassium, calcium and vitamins B1, B2, B3, B6 and B12. Contains Fucoidan, a particularly hydrating compound that promotes a youthful, plump appearance. Reduces appearance of fine lines and wrinkles while also minimizing the appearance of surface redness.
  • Macrocystis Pyrifera Extract a brown algae abundant in vitamins, minerals, antioxidants and essential fatty acids. Helps minimize the appearance of surface impurities and irritation and visibly diminishes uneven skin texture.
  • Hyaluronic Acid is a naturally occurring polysaccharide. It holds up to 1000X its weight in water to flood skin with long lasting hydration and strengthen the skin’s moisture barrier. Derived from the plant-based bacterial fermentation of Bacillus subtilis.
  • Sodium Hyaluronate a vegan fermented form of Hyaluronic Acid that helps maintain skin's natural moisture barrier.
Read full ingredient list

Ingredients

NATURAL DERIVED INGREDIENTS: 

Aqua, Gigartina Skottsbergii Extract*, Macrocystis Pyrifera Extract*, Undaria Pinnatifida Extract*, Sodium Hyaluronate, Hyaluronic Acid, Potassium Sorbate, Citric Acid, Lonicera Caprifolium Extract, Lonicera Japonica Extract, Chlorophyll

*ORGANIC INGREDIENT

After cleansing and misting, apply two pumps to face, neck + decolleté. Use morning + night or anytime skin needs an intense moisture boost. Follow with OSEA moisturizer of choice.


  • Lightweight

  • Moisturizing

  • Age Defying

  • Reduces Redness
  • Gigartina Skottsbergii Extract a red algae that deeply hydrates skin and promotes the appearance of youthful volume and firmness. Helps protect skin from external aggressors such as wind, dry climates and air pollution. Rich in polysaccharides, vitamins and minerals.
  • Undaria Pinnatifida Extract a brown marine algae rich in iodine, iron, potassium, calcium and vitamins B1, B2, B3, B6 and B12. Contains Fucoidan, a particularly hydrating compound that promotes a youthful, plump appearance. Reduces appearance of fine lines and wrinkles while also minimizing the appearance of surface redness.
  • Macrocystis Pyrifera Extract a brown algae abundant in vitamins, minerals, antioxidants and essential fatty acids. Helps minimize the appearance of surface impurities and irritation and visibly diminishes uneven skin texture.
  • Hyaluronic Acid is a naturally occurring polysaccharide. It holds up to 1000X its weight in water to flood skin with long lasting hydration and strengthen the skin’s moisture barrier. Derived from the plant-based bacterial fermentation of Bacillus subtilis.
  • Sodium Hyaluronate a vegan fermented form of Hyaluronic Acid that helps maintain skin's natural moisture barrier.
Read full ingredient list

Ingredients

NATURAL DERIVED INGREDIENTS: 

Aqua, Gigartina Skottsbergii Extract*, Macrocystis Pyrifera Extract*, Undaria Pinnatifida Extract*, Sodium Hyaluronate, Hyaluronic Acid, Potassium Sorbate, Citric Acid, Lonicera Caprifolium Extract, Lonicera Japonica Extract, Chlorophyll

*ORGANIC INGREDIENT

Even better with...

Advanced Protection Cream Advanced Protection Cream
Age Defying / Dry / Sensitive
Ocean Cleanser Ocean Cleanser
Normal / Combination

Reviews and questions about Hyaluronic Sea Serum

Customer Reviews

4.6 Based on 150 Reviews
5 ★
82% 
123
4 ★
5% 
8
3 ★
7% 
10
2 ★
3% 
4
1 ★
3% 
5
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
G
11/08/2019
Gaby
United States United States
  • How old are you? 25-34
  • What best describes your skin? Oily & Blemishes

Game Changer

I heard about Osea from the To Be Magnetic Lacey Philips Podcast, and these products are amazing! My skin has acne scars and is oily, and at the end of the day, my skin feels tired, puffy, and dirty from the NYC air pollution. Tried this product in a sample and am stunned--it was like my face was being ****** into it's normal place. Even my boyfriend noticed and said to me, wow you look younger and brighter. Huge game changer.

AF
10/29/2019
Ashley F.
United States United States
  • How old are you? 45-60
  • What best describes your skin? Mature & Dry

Fabulous

Thanks to Lacy's interview with Melissa on the Expanded podcast, I discovered this fantastic line. I love the story behind the product and the quality.

K
10/27/2019
katie
Canada Canada
  • How old are you? 35-44
  • What best describes your skin? Sensitive & Reactive

Beautiful

After being non-committal on whether or not to buy this because I have sensitive skin that reacts to everything, I finally took the plunge after hearing Melissa on the expanded podcast. I'm so happy I did. Love this product. My skin feels hydrated and bright.

W
10/21/2019
Whitney
United States United States
  • How old are you? 12-24
  • What best describes your skin? Oily & Blemishes

this ish is bananas!!! 10/10 love this product

I literally love this stuff... Usually I am hesitant to use all natural products because I feel like they do not do much for my skin, & I do not see noticeable results, but this serum, in my opinion, is the epitome of a great skin care product: all natural that shows visible improvements in my skin!! I could honestly see a difference after ONE night of using it! It leaves my skin looking hydrated & dewy yet tight & firm. Also, it gives my skin a noticeable glow & leaves people asking me what I use on my skin, to which I say 'OSEA hyaluronic sea serum, its amazing!!' This product is seriously out of this world good, and I don't see myself not using it anytime in the future.

T
10/21/2019
Tallou
United States United States
  • How old are you? 25-34
  • What best describes your skin? Oily & Blemishes

I love it!

I have never used serums before, but I love this one!My skin feels amazing after every use. I did a lot of research before deciding to purchase a serum because they can be very pricey. I am 100% satisfied with my purchase.

C
10/18/2019
Colleen
United States United States
  • How old are you? 45-60
  • What best describes your skin? Sensitive & Reactive

Wonderfully Simple

I love this product! I am in my forty’s overall skin ok until it’s not. My skin is sensitive to many products. I have tried all high end and everything in between. This is simple, easy and absorbs lovely into the skin. My skin looks younger, brighter and I wear no make up. I am a working professional and this routine is what I have been needing! Give it a try! Hope you enjoy as I do.

Sign up for our newsletter to receive exclusive offers, product tips, and more.