Hyaluronic Sea Serum


Hyaluronic Sea Serum

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Size: 1 oz

Skin Type Combination, Dry, Normal, and Oily
Skin Goals Anti-Aging, Calming, and Hydrating
  • Hyaluronic Acid floods skin with moisture
  • Seaweed extracts even skin tone and promote firmness
  • Absorbs instantly, leaving a velvety-soft, dewy finish
Next stop, hydration station

This serum provides a burst of hydration for all skin types with three molecular weights of Hyaluronic Acid and age-defying seaweed extracts. Think of this serum as a magnet, attracting 1,000 times its weight in water and delivering it straight to dry, thirsty skin. Feel refreshed yet? You will once the Hyaluronic Acid gets to work intensely moisturizing and plumping. Seaweed extracts take the process one step further to even skin tone and visibly improve firmness. We’re starting to believe this product is the fountain of youth.

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


Add this serum as an extra step to your skincare routine (after cleansing and before moisturizing) to boost hydration during cooler months.


About The Brand

Jenefer Palmer began OSEA in the early 1990s at her kitchen sink. Today, the company delivers potent products drawn from the healing ocean, using bioavailable ingredients that are readily absorbed and effectively rejuvenating.

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Customer Reviews

  • Not moisturizing

    Alyssa September 23, 2019

    This product is not moisturizing. I use as directed and it has been drying out my skin. I’ve been using it for ~2 weeks and almost immediately noticed a difference in my skin. Will not be purchasing this product again.

    5 persons found this helpful. Mark as helpful
  • Not sure just yet.

    Lauren P. July 12, 2019

    I cannot really tell if it’s making a difference. It’s way too expensive for results that are not apparent. Will search for a different product once this one is used up.

    2 persons found this helpful. Mark as helpful
  • Amazing - highly recommend - buy!

    Mary C. July 12, 2019

    High quality, gentle yet effective, non-toxic, glass bottle wonder. I see a *huge* difference in my skin when using this (tone, texture, inflammation, redness, softness). I apply it every evening then apply the OSEA night cream. Will never go back to my old toxic routines.

  • Great serum

    Rachel H. July 12, 2019

    It is super hydrating for my face but to me smells kind of Earthy (seaweed is one of main ingredients). Other than that it is wonderful!

    3 persons found this helpful. Mark as helpful
  • Love it

    Alicia April 23, 2019

    I love the slip of this serum. It’s very hydrating and leaves a smooth canvas behind. It’s slightly mattifying and I kind of like a glow which is the only reason I gave it 4 not 5 stars.

  • A great hyaluronic serum!

    Michelle H. April 22, 2019

    If you are familiar with hyaluronic serums and know you want one that’s also better for you and the planet, you should definitely invest in this. I’ve struggled with finding the correct moisturizer for my entire life until about a year ago when my dermatologist told me to try a proprietary serum. I slowly shifted from that serum to Osea’s, and now I wouldn’t use anything else for my skin. It moisturizes the perfect amount without leaving my face oily or sticky (although it does feel sticky on your fingers, when it dries on your face it doesn’t!)

  • Just ok

    Erin M. January 09, 2019

    I like this stuff; wouldn’t say love…it’s a tad sticky and I haven’t noticed a huge difference yet but will continue to try it out.

  • Great boost!

    Stacey C. January 02, 2019

    I’ve been switching all of my skincare to cruelty free + vegan products so I gave this one a try on someone’s recommendation. I was pleasantly surprised at the size of the bottle when it came. I put it on under my moisturizer and I love how it feels on my skin. Will definitely buy again!

  • My new favorite product

    Alexa G. October 17, 2018

    Highly recommend this one!

  • The Best Lightweight Hydrator

    Sarah M. September 25, 2018

    I love this lightweight hydrator! It’s super easy to dose with the dropper. I apply it in the morning after I wash my face. I got a tip from one of the store associates to mix this with the True Botanicals Vitamin C powder booster and I love the combination. It gives me lightweight hydration and a glow. I follow it up with a daytime moisturizer with SPF. For hot, summer days, it would definitely be enough moisture for my skin by itself.

  • Give your skin a drink!

    Rachel M. September 04, 2018

    Found this product during a phase in which my combo skin started feeling extra dry and irritated. Gives my whole face a drink and balances out my oil and dryness. AND it is one of the first hyaluronic serums that doesn’t leave my face feeling sticky!

  • Fast absorbing

    Olivia B. August 31, 2018

    I have really dry skin and my skin drank this stuff up. It’s crazy how fast it absorbs. If your skin is really dry, you’ll need to use an oil or moisturizer afterwards because my skin felt super tight after.

  • If you have dry skin, you need this!

    Lauren B. August 29, 2018

    Amazing serum for dry skin! It really does help my skin to feel more hydrated and nourished. Make sure you layer under your regular moisturizer. It is intended to be a concentrated treatment, not a moisturizer. You will notice that it helps your hydrating steps to work even better!

  • My favorite serum

    Michael M. August 28, 2018

    I’m obsessed with this serum. It’s so gentle and lightweight, applies like a satin smooth gel and helps lock in moisture from my hydrating mist! It’s so great underneath my youth dew facial oil! Will definitely buy again.

  • Not Super Moisturizing

    Minta August 25, 2018

    I want to like this product and layer it under my moisturizer…however, my skin still feels tight and not super dewy or moisturized. I will continue to try to work with it, but not likely to repurchase as it doesn’t seem to add any hydration to my dry skin.

  • Plumping

    Elizabeth D. August 24, 2018

    After I use this and apply moisturizer my skin is super plump and dewy but never sticky. Will purchase again.

  • Smooth

    Jenna M. June 01, 2018

    This is a nice smooth addition to moisturising. It is light and thin and absorbs right into the skin and really locks in moisture.

  • Soo drying

    Dana March 17, 2018

    I don’t understand this stuff and how people say it’s moisturizing. I feel like I must have gotten a dud bottle or something. It is so incredibly drying. It makes my skin feel flaky and crusty and tight almost instantly About 10 minutes later I can rub my cheek and flakes of skin and product start coming off in large amounts but after I don’t feel smooth and moisturized, I just still feel dry. It’s awful. I wish I hadn’t thrown away the packaging. It’s so expensive to be so terrible.

    • From Follain:

      Hi Dana, I would be sure to use the serum under your daily or nightly moisturizer for the serum to take on its full effects! The serum shouldn’t be used alone but with your moisturizer layered on top for an extra boost of hydration!

  • Great for layering

    Jess March 08, 2018

    This is a great surge of moisture. I’m using it after cleansing and a mist but before serums, oils/moisturizers. Should I be layering it on top of water-based serums instead of underneath?

  • Very drying

    Heidi H. February 27, 2018

    I didn’t find this product very moisturizing or plumping. However, rereading the HINTS: I will add it as an extra step after cleaning and before moisturizing.

    • From Follain:

      Hi Heidi, yes! This works great as a moisture boost to your everyday moisturizer by applying it after cleansing and toning and then adding in your daily or nightly moisturizer on top!

  • From Dry to Dewy

    Wynne L. January 31, 2018

    Takes my dry, parched winter skin and instantly gives me a dewy glow. Super light-weight and a MUST step in my skincare routine before oil and a moisturizer

  • Best serum

    Sara N. January 25, 2018

    This might be my most favorite product from Follain ever. I use this serum every night, sometimes adding the True Botanicals Vitamin C Booster, and it has definitely made a difference in my face. Lines are diminished, and my skin is smoother and calmer. Will definitely be purchasing again!

  • Love this acid

    Monica L. December 30, 2017

    This hyaluronic acid works wonders as it has pure ingredients. I use it in the evening and wake up with supple skin. My only criticism is the glass container – is easily shattered. I dropped mine in the sink and shattered the glass. Would be great to find out the percentage of the hyaluronic acid.

  • Love this!

    Sasha November 16, 2017

    I’m a huge fan of this serum. I find it absorbs immediately, and a little bit goes a long way. It provides a great moisturizing base for my other skincare products.