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The Ordinary Marine Hyaluronics 30ml

4.4 of 80 reviews


4 instalments of $3.23


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4 instalments of $3.23


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The Ordinary Marine Hyaluronics is a lightweight marine-derived water that helps to lock moisture in your skin, much like a Hyaluronic Acid does. The difference? The consistency of the Marine Hyaluronics is thinner and lighter, more like water than a typical serum texture. This facial serum helps to attract and hold water in the skin, ensuring your complexion remains plump and hydrated throughout the day. This product is fast absorbing, suitable for all skin types and should be used before facial creams. 

What customers say

GREAT - 86% recommend

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Skin Concern:

  • Dull, dry or dehydrated skin

Skin Type:

  • Dry
  • Normal to dry
  • Normal to oily

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The Ordinary Marine Hyaluronics

The Ordinary Marine Hyaluronics

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Customer Reviews

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4.4 of 80 reviews

86% recommend this product

  1. 39

  2. 32

  3. 9

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Most Helpful Positive

Absorbs so quickly


I definitely think I prefer this to hyaluronic acid, which I did not expect! The Adore Beauty staff recommended it to me and it's been really nice. My skin is naturally dry and this sinks in like water. It's got a very watery consistency so it spreads really easily and you really don't need much. It's a great choice for sensitive/dry skin. It also doesn't pill like hyaluronic acid does. The price is so good, so I was happy to buy just to try and it worked out!

Most Helpful Criticism

Hydrating Serum


Felt Hydrating, but didn't feel like it made a huge difference to my skin after about 2 weeks.
  1. Absorbs so quickly


    I definitely think I prefer this to hyaluronic acid, which I did not expect! The Adore Beauty staff recommended it to me and it's been really nice. My skin is naturally dry and this sinks in like water. It's got a very watery consistency so it spreads really easily and you really don't need much. It's a great choice for sensitive/dry skin. It also doesn't pill like hyaluronic acid does. The price is so good, so I was happy to buy just to try and it worked out!
  2. Self care staple!


    I really enjoy the Marine Hyaluronics. I read a LOT of reviews mentioning it working well, but commenting on it's odour. I was worried about not wanting to use it because of the smell. But I don't have a negative comment on the odour, because it doesn't really have one. It works really well for me and my dry, sensitive skin. I enjoy it more than the other Ordinary Hyaluronic Acid.
  3. Love it


    I use this in the morning in place of the other Ordinary hyaluronic serum. It's so lightweight and absorbs perfectly. I find this helps with my facial redness too.
  4. Hydrating


    This serum is so hydrating. It sinks into my oily skin so well and is so lightweight but does an amazing job. Plumps my skin
  5. Moisturising and Easy to Layer


    I’ve got both this and the Hyaluronic Acid + B5. This is my preferred one of the two. It’s really moisturising but has none of the stickiness of the Hyaluronic Acid. Very light and absorbs easily it works really well with layering other serums. No smell.
    This is definitely my go to and at a great price too!
  6. Quick and easy hydration!


    I originally bought this for my partner's (combo/dry) skin, but have used it on my (oily) complexion quite a few times now. It's a lovely, watery consistency that soaks right in. I'm not sure how much of a difference it's made on my skin, but his skin is so much less dry!
  7. Great first time round


    The first bottle of this made a noticeable difference to my skin, smoother and plumper. The second time I ordered it not so much... perhaps good to use as a skin boost on a semi regular basis! Give it a try as the price is super reasonable :)
  8. THE best hydrating serum


    Don’t be fooled by its watery consistency, this is literally the most hydrating serum I’ve ever used! I still get dry patches with other hyaluronic acid serums however this one hydrates so well and is so cheap I’ve started using it on my hands too. Very good for oily skin as well due to the light consistency; I find other thicker serums tend to just sit on top of my skin and make it more oily. SUMMARY: holy grail moisturiser especially if you have oily skin!!!!
  9. Literally like water


    I bought this to compare to the hyaluronic acid one, and I think I prefer that one. This one is VERY watery, and if you use the dropper it will literally run off your face so you need to apply it and rub/tap it on instantly. Because it’s thinner it leaves no residue unlike the hyaluronic one which dries like a film, so is better for layering under skincare or makeup. I didn’t notice much increased hydration but it is a nice addition to one’s skincare regimen, I think I will continue to buy it just to mix it up with the other serum. Just be careful applying around the eyes because FYI this burns if you drop it in your eye haha
  10. Hydrating and absorbs well


    I much prefer the texture of this product than the "Hyaluronic Acid 2% + B5". This product is much more watery so it absorbs easier, whereas the other one is thicker and you can feel a slight film on your face after applying it. However, since it's thinner, you need a bit more of this product to feel like you've covered your whole face well. Which one you choose just comes down to personal preference.
  11. Sticky


    I was excited to use this product especially due to the price but I found no matter how much or how little I used it was still sticky and pilled. Will stick to my Dennis gross hyaluronic from now on
  12. Hydrating and absorbs quickly


    Very hydrating but smells a little funny! Quick to absorb and works well under makeup.
  13. Mmmm yes thank you again The Ordinary


    I use this morning and night and my skin positively glows after using it. It becomes noticeably more plump.
  14. Does what it claims!


    I wanted a bit more moisture before using the Vitamin C 23% and it did the job beautifully. It gives me that light, quick absorbing boost I was looking for. Fabulous!
  15. Works really well


    I love the ordinary. This makes my skin more even, smooth, toned, and soft! An amazing product for the price and lasted a fair while considering the size of the bottle! Fave product of theirs
  16. Results at last!


    I have 78 year old skin with its inevitable wrinkles, and since using this serum (3 weeks approx) already notice what i can only describe as a general softening appearance. I'm not looking for a miracle, just a bit of help, and believe i have it. Thank you☺
  17. does work


    my skin has become significantly more hydrated but i don't know whether to hand it to this or other products i started using as it doesnt feel like its doing much but yeh it does work. its also super lightweight
  18. very light weight


    it is very light and great for oily skin too. however little is enough for the entire face. i apply this serum after vitamin C serum
  19. Great


    Good product for good prise
    The serum feels like water, I actually expected a gel. Easy to use, just a few drops needed. Does not irritate, gentle, it has no smell ( contains no perfumes and which is even more important, no alcohol). The skin feels smoother.
  20. Absorbs so quickly!!


    I've used the Ordinary's hyaluronic acid products before, and they've always felt a bit sticky on my skin. This absorbs straight away, but still gives my skin the added hydration it needs. I have oily, dehydrated skin and this doesn't exacerbate any oiliness, which is great!!
  21. AMAZING!


    This is so lightweight and it absorbs so well but actually provides hydration to the skin similar to that of my moisturizers.
  22. Hydrating Serum


    Felt Hydrating, but didn't feel like it made a huge difference to my skin after about 2 weeks.
  23. Not great for my sensitive skin but my BFF with dry skin LOVED it


    I love the ordinary HA so wanted to try this marine version.

    I have very sensitive skin and I found it made my skin red and itchy temporarily after application.

    No long term negative effects but switched back to the normal HA from the ordinary.

    However, I gave to my BFF with dry skin and she LOVED it.

    If you don't have sensitive skin, a great product.
  24. Didn't work for me


    This is recommended for 'all skin types' but really exacerbated oiliness in my skin instead of hydrating. The texture was also really runny and hard to apply to the face. Wouldn't recommend to combo or oily types, the Hyaluronic Acid + B5 is a better option and is also nicer in texture
  25. My new “can’t live without item”


    This product has changed my skin. The lightest and most effective hydrator. You can wear it under anything (make up, heavier night creams), but it just makes your skin feel so rejuvenated. The price makes it any easy regular purchase. I have also been mixing in some High potency vit c powder and I swear I look younger and fresher since using it
  26. Great alternative to TO’S HA


    I’ve tried the ordinary’s HA. I found it hit and miss. Sometimes it was drying on my skin even though I’d always make sure to add it to damp skin.
    Thought I’d try this instead and I’m in love. It’s very light and absorbs almost immediately. Works great in between some skins of a hydrating toner. Great for my dry skin!
  27. Alternative to the Hyaluronic Marine Hydration Booster

    Tea Sommelier

    My skin develops dry patches of eczema every winter, and I've had to reach for the Hyaluronic Marine Hydration Booster from Dr. Dennis Gross. As the price went up again this year, I've turned to The Ordinary's Marine Hyaluronics. Obviously the true test is the Melbourne winter, but I've been using it a couple of times a week as a serum during the rest of the year. So far, I've found that the Marine Hyaluronics consistency is much more watery, and I seem to use twice the amount of product, that I did with the Dr. Dennis Gross one. However, this Marine Hyaluronics is much for economical and does not have any scent (the Dr. Dennis Gross one had a slight scent that wasn't really pleasant). I have faith that this Marine Hyaluronics from The Ordinary will save me from the incoming winter months. Would definitely recommend this to anyone who enjoys or is curious about the Hyaluronic Marine Hydration Booster.
  28. Nice and light


    I really like how lightweight this is. The other one from The Ordinary is, to me, more like a gel consistency which I don't mind. I much prefer this one though as it absorbs quickly and works really well with my other products in my skincare routine. Great for oily/combo skin.
  29. Not as good as the other hyaluronic serum but great for summer


    This is great for summer as it's super light weight and watery, however I much prefer the other hyaluronic serum- even during summer. The smell is... unpleasant but nothing I can't work with. This definitely works with other serums for moisture, just not my favourite!
  30. A great addition to my regime


    Being from The Ordinary you know your getting great value and a quality product and this is no different. I have really noticed a difference when using this serum.
  31. So good!


    Great serum! Great price! Super hydrating for anyone with dry irritated skin
  32. Undecided


    I have dry skin thats also prone to breakouts, and struggle to find anything that works for both concerns. I have used this product daily now for 2 months and I am unsure if this product is helping my dry skin or not, it doesn't seem to make a difference to the moisture level. In saying this, I like the consistency and it feels nice on my skin.
  33. OK moisturiser


    I have used this for a few months and it does an OK job of moisturising the skin but it has a very watery consistency which can make application of the product difficult at times.
  34. Hydrating and simple


    Love it! Hydrates very effectively and you don't need to use much. Does smell a bit funky when you first put it on but that doesn't bother me.
  35. A surprise winner


    I love this product. I have very dry skin so added this into my regime to add some extra moisturiser and thought maybe it was over kill. But I have grown to really, really love it. I bought this one as the other HA was out of stock but i'm so happy I did! It absorbs instantly and really does hydrate! The smell is minimal for me. I don't even notice it now. Have used for three months now and will be ordering again.
  36. Super Hydrating, Zero Stickiness


    I tried this as I wanted to try an alternative to The Ordinary Hyaluronic Acid I typically use and love. This is awesome for the price point and really works. So so so hydrating. Plus, what I loved is that this product didn't have the stickiness of the other Ordinary Hyaluronic Acid Serum. This is seriously so lightweight on the skin and is absorbed straight away. Really like and will purchase this, as opposed to the other, in the future.
  37. Gentle on skin but does the job!


    I have oily acne prone skin, but got very dehydrated this winter. This helped hydrate my skin lightly and made it so much better! I like to use gentle products and this is a great, lighter alternative to hyaluronic acid.
  38. Hydrating


    It absorbs instantly. I notice the moisturizing effects when I forget it and my skin feels dry. I don't notice any weird smell unless I bring it right up to my nose, even then it isn't overwhelming.
  39. Stank But Dank


    It smells. Yeah, kind of gross. It also has a really watery consistency, so it's like rubbing water on your face. Weird, I know. Do I even like it? Yeah actually, better than the Hyaluronic 2% because it doesn't leave me feeling sticky af. I usually always wear a hyaluronic acid and this particular one lives at my bf's house. I put it on morning and night and never really see a difference compared to my hadalabo one I use at home. It doesn't feel like you're doing much when you're applying i but I forgot to put it on one day and my skin got SO DRY. If you can get past the smell and the feeling you're doing nothing, you'd probably love it. I don't even use my 2% because it makes me feel sticky and this dries to nothing.
  40. Hit and miss


    Ok is hydrating but has very strong smell i prefer the HYALURONIC ACID 2% + B5.
  41. Marine vs Hyaluronic Serum


    Selecting between The Ordinary Hyaluronic serum and the marine serum I would go hyaluronic- nicer consistency, smell and I feel it applies better. This product is great but I prefer the hyaluronic.
  42. Still my favourite hydrator (Review after 1.5 months)


    I have been using this for more than 1.5 months and it is a staple in my routine now. I really like how light and watery it is. It dries down to nothing and causes no pilling. It also hydrates my skin and can act as a buffer if I’m using strong actives. Overall a fantastic product.
  43. Best hyaluronic prodcut i've used


    It's a lot thinner than the other Ordinary hyaluronic acid with no tacky residue. It also absorbs quicker and feels much lighter on the skin - great for summer!
    There is a weird smell but it goes away once absorbed.
  44. Very good if you don't mind the smell


    This has a really thin, watery consistency so it works really well as a hydrating lotion before other treatments. It absorbs quickly and sits well under other products. The only downside is that it smells a little funky. To me, it smells a bit like cheese or something that has fermented!
  45. Love it


    I've used half a bottle of Marine Hy and use it as the first step after cleansing, both AM + PM. It is very lightweight and I experienced no irritation. No problem with the smell, it hasn't bothered me at all.
  46. Not a keeper


    As with all The Ordinairy products the price is good but I’m not a fan. It feels weird, greasy or something. And the smell...! Really unpleasant. Plus I didn’t notice any effect. Won’t repurchase.
  47. Refreshing but not as satisfying as HA 2%


    I'm a big fan of The Ordinary Hyaluronic Acid 2% + B5 so I thought I'd try another HA. The consistency is completely different, as thin as water rather than a thicker serum, so it doesn’t quite feel as satisfying when you put it on. But it does sink into my normal skin very quickly, so that’s a positive. I haven’t noticed any particularly positive or negative results, so I’ll finish off the bottle but will stick with the 2% in future.
  48. Does the job and great price


    I used the original TO Hyaluronic and I definitely prefer the texture of this one, it seems to absorb quicker and feels less sticky which is nice. It has a bit of an off scent but nothing too worrying. Great for the price, lovely under the rest of my skincare.
  49. Lightweight moisturiser


    This is a great moisturiser especially if you have oily and acne prone skin like myself. I use this under makeup to add a touch of moisture. It does have a weird smell but it goes away almost instantly.
  50. Smelly


    It's very lightweight and I prefer it to the original hyaluronic acid, but its really super smelly. Have to hold my breath when applying it, but at least the smell goes away quickly. That said, I don't find it exceptionally hydrating for my dry skin.
  51. Good additional moisture barrier


    Found this product really good and hydrating for my skin
  52. Hydrating but not too heavy


    I have combination skin and sometimes my cheek could be quite dry. However, I hate the stickiness after putting on heavy cream. This product suits my need very well. It provides proper hydration for my skin while not making it too oily or sticky. Some people complain about the smell. I do notice some smell (like cheese) but I can totally accept that. I would highly recommend this product to anyone that does not have a toner/essence and is worried about putting on heavy products on your face.
  53. Better than the hyaluronic


    This is a good product. It goes on easily (the smell disappears pretty quickly) and it absorbs into the skin quite well. It is moisturising but possibly could be more moisturising.
  54. smelly but good for moisture


    I bought this because the weather is getting warm. This product is smelly, but is quite effective for moisture.
  55. Ok so far


    I decided to give this one a go instead of the The Ordinary Hyaluronic Acid 2% + B5 this time around as I have been using the latter for a while. This one is very runny but I do like that it is not sticky. I spray some toner onto my face and apply and it sinks in well. I have oily/combo skin and I am not entirely sure this makes a huge difference to my skin's hydration, but I still enjoy the process and feeling on my skin.
  56. Summer hydro


    I love anything that helps with my dry skin so I'm a big hyaluronics lover, but in summer I can see it could feel a bit thick and stuffy so I'm really happy I found this as it does the same to my skin as the thicker serum but feels more summer friendly. Often thin creams aren't as good as thick ones on dry skin but so far I feel this one does the same so hopefully it does over long term use throughout summer as it will save my skin big time.
  57. Good Light Moisturisation


    This delivers light moisture to the skin and is well suited for hot humid and tropical climates.
  58. Good but smells


    I love that it's quite watery and hydrating. My skin soaks it up immediately! I just don't like the way it smells.
  59. Nice!


    This is very hydrating! The only issue is that it’s extremely watery!
  60. Nice consistency and hydration


    I have the oily t-zone, dry everywhere else type skin with fine lines. This is nice and thin, I apply a few drops to damp skin and the spray with a mist (avene spray) to get those water absorbing molecules to do their thing! No irritation so far and absorbs quickly with no sticky ness after.
  61. Loving This Range


    I did a bit of research, directly on TO website to determine which skincare products are suitable for me, to create a unique solution to look after my face. I chose this product due to its hydration properties, something that skin starts to lack when you age. I love how the product smooths out across the face. Don’t let the minute smell turn you away, it’s a very light smell and disappears in seconds.
  62. Quick-fix hydration that disappears without a trace


    I have dry skin (more so in winter) and this serum has found a regular place in my routine. It's super light and watery and disappears almost instantly. Unlike other hyaluronic serums, it's not sticky and almost disappears without a trace. I only gave it 4 stars as I'm not sure if it is helping my skin in the long term but for a quick-fix hydration boost that layers will with other serums, this is a good one to try. I have not noticed the unpleasant smell that some other reviews have mentioned. It does have a smell, but I don't find it strong or overpowering and it disappears very quickly (almost instantly). I actually like that The Ordinary don't use artificial fragrances to mask the natural smell of the ingredients in their products.
  63. Clear skin


    Iv been using this for maybe couple months now and I have noticed that I am no longer getting breakouts. I may get the odd lil bump but it’s nothing to worry about, also my skin seems to be a lot more even tone that could be cause it’s hydrating my skin & it’s more healthy another the smell I reckon it’s really that bad i didn’t know what people are going on about, it’s there for a second so don’t let that stop you from trying this little beauty out. Definitely will be continuing to use this
  64. Deeply hydrating and quick absorbing - love!


    A wonderful light-weight yet highly effective hydrating serum. It has a water-like texture, soaks in quickly and my skin just drinks it up. I use it both morning and night and even on the backs of my very dry hands. There is a mild smell upon application- similar to turned milk which may be off putting for some but doesn’t bother me at all. It fades extremely quickly and the outstanding results of this serum are worth it! A definite repeat buy for me.
  65. Loved it, but...


    I have combination dry to oily skin so finding a moisturiser that isn't too dry but isn't too oily can be a nightmare! This proved to be a perfect addition to my daily skin routine, giving my skin that little bit of extra moisture it needs without leaving me oily. On a normal day I will only use this product once a day, but if I'm feeling a little on the dry side I'll add it to morning routine as well. The only down side to this product is the initial smell (the reason I am giving it 4 stars). That being said you do get used to it, and it's a small price to pay for a good product.
  66. Light weight nourishment for all skin types


    Love love this one. Was very excited to see that TO was venturing into marine botanicals and it doesn't disapoint. Very light, watery consistency. Absorbs super fast. Has the advantage of not pilling the way TO Hyaluronic acid does. Layers in beautifully and nourishes my rosacea prone sensitive skin.

    I've read a few negative reviews de to the smell.. firstly; it's more of a vinegary-briney ocean type scent. Its very faint. Secondly; the smell is gone within seconds. You get used to it very quickly, especially given the benefits your skin will reap.
  67. I just purchased this and I am already in love with it.


    This product glides on to my face and dries almost instantly leaving a non sticky plumpness which seems to last. If you find it sticky you are probably using too much product at once. The handy dropper gives an indication of how much to use.
  68. Unpleasant smell


    I have dry skin and bought this upon recommendation of a friend to purchase hyaluronic acid. While this seemed to have boosted moisture levels, it smelled very strongly and unpleasant. My husband thought I smelled like a tuna sandwich, so I can't use it around him anymore!
  69. Loved it


    Lightweight and quicker to absorb than the other HA serum, but the smell takes a little getting used to... luckily, it fares from the skin pretty quickly. Unsure if I'm fully coverted from the other TO HA serum, but we'll see...
  70. Brilliant


    This serum is incredibly light weight but does an amazing job. I know add this serum to my morning routine
  71. Awesome but smelly


    I use this together with their other hyaluronic b5 serum and it’s great although it really smells like dried up milk vomit on a bib
  72. Runny consistency but works well.


    Does a good job of hydrating the skin but it is very runny so it is not as easy to apply as the thicker serums.
  73. Nice and lightweight


    I have dehydrated, combination skin and I like this a lot! If the Hyaluronic Acid 2% + B5 did not work for you because of it's sticky texture and pilling etc, this will be a great substitute. It's not hydrating enough on it's own, so I use it before a moisturiser.
  74. Hydrating


    Very hydrating but light, I love the product but the water consistency is hard to apply. It does smell a bit if you put it right to your nose, but the smell does not linger at all once absorbed, which is almost instantly upon application. I love to use this around my eyes.
  75. Get this product!!


    Absolutely love this product, except smelly a little... But so good to use! Will buy again
  76. Amazing if you can get past the smell


    This is so good. It's like the HA + B5 but less sticky! Great for the hot months when you don't want that extra stickiness. It's like a water formula, soaks in instantly! The smell does go away once it's soaked in. I reallllly like how hydrating this feels.
  77. Buy it!


    1. It smells bad. Real bad. But either I’m getting used to it or the smell seems to have gone away idk, but it’s something I’m willing to endure cuz of all the good things this has done to my skin.
    2. I’ve been using this for just 1 week and my skin has gone from super dry and inflamed to calm and plump. Did I mention I don’t use this with any other moisturiser/cream/whatever else? As a person with oily skin I’m almost afraid of moisturisers because they tend to add to the shine which is why I chose this for its super light formula but boy don’t let that fool you cuz this has been one of the most hydrating serums I’ve ever come across.
    3. Buy it!
  78. Smelly but good


    When my bottle of this first arrived, I was about to email the company to ask if had gone "off" due to the weird smell (which is something between parmesan cheese and dirty feet). However, a quick check of their website revealed that everyone was commenting on the same thing! It doesn't smell "marine" like the ocean, more like rotting algae.

    Yes, it stinks, but the smell doesn't last long on the skin, if at all. The hyaluronic formula is a lot lighter and less "sticky" than The Ordinary's Hyaluronic Acid 2% + B5, so it is a good option for the hotter (greasier) weather. It absorbs a lot faster and apparently has a larger molecule size, so hydrates the upper layers of the skin.

    It's good stuff, despite the smell.
  79. Very light texture


    This is a very light, water like formula. Less sticky feeling than the hyaluronic acid 2% + B5, but I hate the smell of this. It does go away once absorbed but it stinks.
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