Vitamin Sea Serum


Vitamin Sea Serum

Returns are always on us!

Size: 0.6 fl. oz

Skin Type Combination, Dry, Normal, and Oily
Skin Goals Anti-Aging, Brightening, and Elasticity
  • Brightening, vitamin-rich facial serum 
  • Moisturizes and helps to reduce the appearance of fine lines
  • Oil-free, fragrance-free & suitable for most skin types
Your skin’s daily dose of vitamins

This hydrating serum helps improve the appearance of wrinkles and brightens skin, delivering a radiant glow you won’t want to go a day without. Oil-free and fragrance-free, it relies on a Hyaluronic Acid base to restore moisture while helping to plump and lift skin. Ferulic Acid, rich in vitamin A, C + E, further binds moisture to the skin, and seven organic seaweeds help to reduce the appearance of fine lines. The vibrant marigold shade comes from antioxidant-rich Turmeric, which helps to boost radiance (but don’t worry, it won’t stain!).

Please note, given the rich ingredient base, this product has an initial scent of seaweed, which then dissipates as it absorbs into your skin.

After cleansing, pat serum onto skin to deliver an instant antioxidant boost. Follow with moisturizer. Use AM and PM.


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

  • Sea Serum

    Lauren G. November 14, 2018

    I think the Sea Serum is underrated! I haven’t tried its sister product but I love it. A little goes a long way and it soaks in well. Keeps skin smooth and full.

  • happy

    Carrie S. November 16, 2018

    I love these products.
    I have not found a cleanser comparable.
    The serum, I am just using for the first time.
    Thank you for your products and the integrity that you put into them

  • Beyond My Expectations

    Elizabeth C. December 06, 2018

    I’ve been taking care of my skin for years. Always moisturizing, using sunscreen, removing makeup before bed, using a mask when warranted, etc.. But I’m now 55 and thing are changing. So I had to look for additional help with dryness when my usual routine was sluggish. This product was beyond my expectation! Not only did it aid with my dryness, it helps with pores, general appearance and softness. Talk about turning back the clock in a bottle! A small amount of the serum before moisturizing and I’m out the door. I highly recommend this product.

  • Morning Habit

    Sarah W. December 17, 2018

    I feel good about using osea products because i know they’re committed to clean ingredients. This vitamin sea serum has slowly started to fade away the hyperpigmentation spots on my forehead. I think all the products are a fantastic price for what you get, I’m achieving better results than some much more expensive products I’ve tried in the past.

  • One of the best serums

    Radoslav D. December 21, 2018

    This is loaded with active ingredients and when I use it after the shower it feels unreal! Can’t say enough. I use this followed by the triple serum and I know I’m good to go. So glad I tossed me creme de la mer when I found this line !

  • Winter skin blues

    Cindy N. February 13, 2019

    I like the texture and scent of the cleanser. I bought the small sizes to see how my skin responded and was very pleased. I did have a tiny breakout in the first couple of days as I normally do when changing to a new product. I kept using it and have noticed positive results. My skin doesn’t feel dry.

  • On my second bottle

    Carroll April 11, 2019

    You can see the brightening instantaneously. Wonderful product after toner and before good quality moisturizers. Brought my skin care up to a new level. Just so expensive…,

  • The most amazing product I have ever used

    Karolina April 06, 2019

    The serum is so light and energizing I feel like my skin glows every time apply it. And it leaves my skin glowing throughout the day. This is probably one of the best products I have ever used on my skin. the natural ingredients nourish my skin, which is very sensitive to chemicals used in most of regular skin care products. This serum cause no irritation, dryness or breakouts and on the contrary, softens and smooth-ens my skin leaving an amazing glow.

  • Best Osea Serum

    Ashley H. February 23, 2019

    I’ve used the hyaluronic sea serum, and this is the same thing with more benefits. Use one squirt and rub it in really well as your first step or right after toner. Algae/marine collagen is the fountain of youth, so grab this product!

  • Repeat customer!

    Lin H. January 12, 2019

    I have been using the Vitamin Sea Serum for the past 2 years! Totally love using it in my daily routine. I used to have oily yet dehydrated skin, but since using this serum coupled with a gentle soap and squalane oil, my skin has improved drastically over time. It is no longer oily and does not feel dry.

  • Wished for better outcome...

    Destiny B. December 24, 2018

    I was excited to purchased the vitamin sea serum… especially with all the great reviews, but within a week it disagreed with my skin horribly!! I was disappointed because I Use the advanced protection cream & I love it but this was just not a good fit. Return & refund was easy because of the guarantee. Guess you can’t win them all. Will still continue to use the cream! 🙂

  • Weird smell

    Ginny T. December 23, 2018

    I know it’s plant based and vegan but I feel like it doesn’t soak into my skin as good. There is weird fishy smell too. I think it may be sea week? Idk, sort of disappointed for the amount I spent on this product.

  • Life saver

    Erica L. December 22, 2018

    Love this product! It leaves your face feeling fresh and young.

  • Great but stinky

    Shelby January 02, 2020

    I love how this feels on my face. It absorbs quickly, but it does have a fishy smell. I layer it with some other good smelling lotion, so it works out. I haven’t seen any significant changes to my skin, buy it may take a full 30 days to see changes.

  • Youth Syrup!

    Sara May 06, 2019

    After using this magical serum for 2 weeks, the visibility of my fine lines nearly disappeared. The texture is light and clean and created a perfect base for a sunscreen or moisturizer. Unfortunately, mine fell out of my cabinet and shattered in my sink, but I love it so much that I ran for a syringe and tried to savor as much as possible. Make sure you keep it somewhere safe from the potential tumble!

  • Sea Serum

    Ann L. July 26, 2019

    Osea is the best face product discovery! The sea Serum does exactly what it claims to do. It is a light easy on serum that erases fine lines and rejuvenates dull skin. Vitamin packed and organic sourced makes me feel great about putting it on my skin.

  • Wondrous! But the scent?

    Maureen September 21, 2019

    I agree with other reviewers who vaunt the merits of the Sea Serum & Eye Cream. This duo is wonderful and leaves my eye and lip area feeling moisturized and supple. The only drawback (and the reason I didn’t award five stars) is the absence of Osea’s beyond-incredible scent. I LOVE your moisturizer (which I use religiously), but what keeps me coming back is the fresh and uplifting scent I look forward to every day. I thought all Osea creams and serums smelled like this, so I invested in all the products. In the end, only the Ocean cleanser and the moisturizer have that amazing scent, so I’m a bit disappointed. The quality of the Osea line, however, is beyond reproach. The quality is beyond compare. My 57-year-Old skin has never felt and looked better!

  • Not as nice a smell as I’d hoped

    Courtney J. October 31, 2019

    It works fairly well but like other reviewers I’m missing the great smell I’ve come to expect from Osea. I actually think I like the hyaluronic serum better. More moisturizing and much better smell. I can’t blame Osea too much though. Other vitamin C serums I have used don’t have a great smell. Must just be the way it is!

  • Fabulous Serum

    Sandra November 15, 2019

    I have been using the sea serum once a day for a month and the difference in the way my facial skin looks and feels is amazing. The fine lines around my eyes and forehead are no longer visible – my skin looks plumped and feels smooth and hydrated. The best indicator that this product is working is that friends have been telling me I look younger and are asking if I had something done. Love it!

  • Vitamin Sea Serum works for me!

    Gail December 23, 2019

    I am a new user of OSEA products and Vitamin Sea Serum is the first product I have used. It compares very favorably to a to a serum product that is no longer available. I like the way it feels and will continue to use it.

  • Refreshing

    Ali December 26, 2019

    This product is so cool and refreshing to put on after washing my face. I love that it doesn’t leave my face sticky or oily. I give this product two thumbs up!!!

  • Hope it’s working

    Karissa March 07, 2020

    I use this as a preventative for fine lines and wrinkles. Hopefully it works if i continue to use it over the years. It has a weird smell but it soaks in nicely. My skin looks great since using strictly Osea products, of which I use 5 different ones, so it’s difficult to pin which product is helping my skin most. My skin has never looked better though!

  • less redness & hyperpigmentation within days

    Caitlin April 23, 2020

    I used to be on a 5-6 step skincare regiment from a large brand that was advertised for it’s “clean” ingredients. My skin was alright… no huge breakouts, but it was always dry, tight, with signs of aging, and I had lots of redness in my cheeks. I thought that was just my skin and I couldn’t avoid that. I switched to Osea to try something simpler, local (I’m from SoCal), and based on natural ingredients and I saw my skin change in honestly, three applications. The redness and hyperpigmentation that I thought I’d never avoid, has already begun to visibly disappear. My skin is no longer ultra dry, either. I bought this, the ocean cleansing milk, eye serum, lip and eye moisturizer and atmosphere protection cream. Love it. Try this!

  • Lovely Vit. Sea Serum

    Tn H. April 24, 2020

    I decided to give the whole line a try and I am happy I did! This product in particular is awesome! It delivers results just like it claims. My concern is only how many people have written reviews on the scent. Do they not realize this is a serum? A Vit. SEA Serum? Do you really want buffers in your serums? Fragrance or otherwise? NO. You want a pure serum that will penetrate with ingredients your skin recognizes so your skin repairs and restores to the best state possible. I really hope people see and read my review and realize that just because some products have ingredients in them to make them smell good, doesn’t mean that all products are created equally or can deliver the same results with said ingredients.

  • Great product but goes somewhat fast

    Elese May 01, 2020

    I use this product at night time to hydrate my face. I like how it feels: not at all greasy. But there is a light fishy scent. One pump is enough to generously cover my entire face and neck. The contents seems to go down pretty quickly. Some days I don’t use it. If I did every day, one bottle would probably last me no more than a month, making this product fairly expensive ritual, particularly when paired with other products. For the quality of the product, I can recommend it. Using this with the algae face mask and facial protective lotion has made a difference in my skin. It feels softer and the softness persists throughout the day.

  • Works well

    Jen July 26, 2020

    It works well and sinks in to my skin fast.
    I find it hydrating, and a little goes a long ways.

  • Skin Nirvana

    Jb July 31, 2020

    My face fell in love with Osea’s Vitamin Sea Serum immediately. Even at 61 I have combination skin and have difficulty finding products that moisturize but aren’t oily. Within a day or two, my skin went from red and blotchy to calm and serene. I immediately stocked up on more. In addition, I was looking for a product that doesn’t come in a plastic container. I love that Osea is environmentally conscious from the skin to land to sea.

  • LOVE!

    Anna September 06, 2020

    I LOVE this serum. I use it with OSEA’s ocean cleansing mud, and it gives my skin a lovely and healthy glow. I live in Hawaii and am in constant fear of sun spots and early aging due to sun exposure, and I swear this serum protects my skin from sun damage. I do hate how expensive the product is, but I find myself coming back and buying it anyway. When I run out and don’t buy more, I notice a difference in my skin: the glow is gone!! So it’s expensive, but if you use about a half a pump it can last about a month. I love it so much I use it morning and night. I think it’s definitely worth the price, and this is another OSEA product I will use until I die.

  • Excellent Quality Serum

    Paris E. October 07, 2020

    I find that algae serums agree with my skin. I thought the aging process might make it a touch strong for my sensitive skin but it didn’t. The serum does go on a bit tacky but once I apply my face cream it soaks in well and keeps my face well hydrated. I do find that I used the bottle in 30 days or so however it’s still a better value than what I have been using.

  • Serum

    Lynn H. November 23, 2020

    I’ve used the Osea products for years, I use the blemish balm and the algae oil daily !!!!! But I just tried this for the first time! I put it on and the blemish balm after. I think my skin feels great and I love the way it feels. It soaks in and hydrates and my skin just feels great, I think the price is high considering the bottle is so small but non the less I love it and I love their products 🙂

  • GOAT

    Erinn March 25, 2021

    This is truly the greatest serum of all time. I’ve never experienced anything like this. My skin is hydrated, dewy, plump, and feels so smooth. I’ve taken care of my skin over the past 10 years but at 31, between kids and work, I’ve noticed a little less of that youthful glow. This certainly brought it back. My only complaint is that the size is so dang small. I’ve had it for about a month and I’m almost out.

  • Excellent serum for combo skin

    Stephanie January 28, 2021

    I love that this serum is great for combination skin. It soaks in easily and doesn’t leave a residue.

  • Excellent product

    Lisa C. January 11, 2021

    This is liquid gold! I have combination skin while also fighting fine lines . This serum soaks in immediately and I compliment it with the Undaria Argan Oil this equals perfection of glowing dewey skin. I highly recommend.

  • Love this Sea Serum

    Cayley January 07, 2021

    I use this sea serum daily with my hyaluronic serum. Perfect after a long beach day to treat dehydrated skin as well as daily use.

  • Vitamin Sea Serum

    Christina L. October 17, 2020

    The website states that the vitamin sea serum is fragrance-free, however, it does have a mild scent upon application that fades within a few minutes. I found that one full pump was sufficient to cover my entire face, ears, front and back of the neck, and decolletage. The product gave my skin a nice glow. However, I do not think that it lived up to moisturizing my skin. As previously stated, I did not use an OSEA Malibu brand moisturizer cream during this testing. Nevertheless, I have used other serums that provide both brightening and moisturizing effects. After three days of only using OSEA Malibu, my skin felt very dehydrated and I decided to incorporate these products in addition to my regular skincare routine. The website does state to follow with a moisturizer, but I would prefer to use a serum that has double-duty. The OSEA Malibu essential hydrating oil most likely would have been a good addition to this routine.

  • Vitamin sea serum

    Dori April 29, 2021

    Love this serum! It’s so smooth going on and I use very little. I have to be careful not to use too much! I have mature skin and this serum helps with the lines and wrinkles. I see smoother more youthful looking skin and my skin feels so soft. I use it on my neck and decollete as well as my face as part of my daily morning routine.

  • A Great Friend to my Skin!

    Ceil R. May 30, 2021

    Because my skin is really on the sensitive and reactive side I must be exceedingly careful
    about my skin care products and the type of – and number of – ingredients which go into a finished product. I am hyper-sensitive skinned so over the years I have become quite attuned to what can (and so often does) trigger skin reactions. I am 59 years young and I have truly found my skin care mecca in Osea’s remarkable line of skin care products. It is no small thing that my skin has – through and through without exception – LOVED every single Osea product (running the gamut of ALL of the cleansers, ALL of the moisturizers, the eye serum, the skin polisher, the various facial serums and treatments) put on it. Happiness is written all over my skin these days because Osea exists and makes such well-thought-out, fine skin care products. Two words apply here: 1) Relief 2) Grateful. Thanks a million times over Osea!

  • Amazing but small

    Ess June 15, 2021

    This serum is very hydrating, silky, and nourishing. It’s one of the best I’ve used. It glides on like silk. My only complaint is that it is quite a small amount for the price.

  • Absolute favorite!

    Margaret June 26, 2021

    From the first time I used this, it’s been my go-to product from OSEA. It soaks into my skin and feels wonderful. Wish they made a bigger bottle!!

  • Amazing feel! (Virtually no smell)

    Tina March 22, 2021

    Maybe some people are extra sensitive to certain smells but I didn’t detect any foul smells whatsoever. I’ve used The Ordinary’s Ascorbic acid serum and even though it has minimal ingredients that one has a strange smell to me. The Osea Vitamin Sea serum feels amazing when it goes on and is super hydrating. Give a product a month or so before deciding it doesn’t work. Your skin takes an average of 28 days to fully renew (longer depending on your age and lifestyle), and a vitamin C serum only speeds up that process–plus, the antioxidants are essential for maintaning skin health. This particular serum has an amazing formula and I can’t wait to see what it does for my skin (I’m 28F, combo/acne prone skin).

  • Bright & Soft - definitely will reorder

    Merrymary February 22, 2021

    I saw the 1 star review but have loved all my other osea stuff that I wanted to give this a try. I waited until I’ve almost finished the bottle before I reviewed. I didn’t see results right away (after a week) but expect that from a line that’s more natural. After 4 weeks of use, my skin is noticably softer and my complexion is so much brighter. I didn’t have a negative experience with the smell – it just smells like it’s rich in vit c to me. I really love this product at night with the hyaluronic sea serum during the day under my moiisturizer. will be repurchasing!

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  • the SMELL....!

    C November 26, 2020

    I was eager to try this, as I generally like other products by Osea. But a couple squirts of this practically made me nauseous… I was trying to think, what does this SMELL like….? And then realized: it smells like fertilizer.
    Maybe you’re ok putting the smell of driving through Oklahoma with the windows down (no offense, Okies) on your face… but for me, it lingered and lingered, and was pretty tough to get past. That aside… I also don’t see any difference in my skin from using it. Disappointing purchase.

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