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Medik8 Hydr8 B5 Liquid Rehydration Serum 30ml 30ml

4.6 of 166 reviews


4 instalments of $19.75


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4 instalments of $19.75


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Is this for you?

Containing a nourishing blend of moisture-boosting Hyaluronic Acid and skin-softening Vitamin B5, this face serum is a must-have for all skin types suffering from dehydration and dullness.

  • Cosmeceuticals

What customers say

SUPERIOR - 91% recommend

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Medik8 Hydr8 B5 Liquid Rehydration Serum 30ml

Medik8 Hydr8 B5 Liquid Rehydration Serum 30ml

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Customer Reviews

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4.6 of 166 reviews

91% recommend this product

  1. 113

  2. 42

  3. 9

  4. 2

  5. 0

Most Helpful Positive

yep love it!


this is one i now won't go without. i got a sample of this and fell in love overnight. it leaves you feeling soft, smooth and glowing. Definitely one of the better quality hyaluronic b5 products on the market. you really get what you pay for with quality and i won't hesitate in dropping a little extra cash for better quality stuff. I use 4-5 drops for my entire face and neck, goes on so smooth, i love the hydration glow the next morning.

Most Helpful Criticism



To be honest I'm not sure this product is doing anything for my skin. I was expecting it to be more hydrated and glowy but it is only like that when I first put on the product and doesn't last. I won't purchase again and it didn't blow me away. I don't mind paying $$$ for good skincare - if it works.
  1. No change


    Unfortunately I haven't noticed any change in skin hydration since using this serum for the past 3 months. It goes on nicely but doesn't seem to have any lasting effects. I won't repurchase
  2. yep love it!


    this is one i now won't go without. i got a sample of this and fell in love overnight. it leaves you feeling soft, smooth and glowing. Definitely one of the better quality hyaluronic b5 products on the market. you really get what you pay for with quality and i won't hesitate in dropping a little extra cash for better quality stuff. I use 4-5 drops for my entire face and neck, goes on so smooth, i ...
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  3. Meh


    To be honest I'm not sure this product is doing anything for my skin. I was expecting it to be more hydrated and glowy but it is only like that when I first put on the product and doesn't last. I won't purchase again and it didn't blow me away. I don't mind paying $$$ for good skincare - if it works.
  4. Meh


    To be honest I'm not sure this product is doing anything for my skin. I was expecting it to be more hydrated and glowy but it is only like that when I first put on the product and doesn't last. I won't purchase again and it didn't blow me away. I don't mind paying $$$ for good skincare - if it works.
  5. Very hydrating


    I have very fine lines and have noticed my skin losing moisture and elasticity recently. This serum has helped with the appearance of these early signs of ageing. It applies very smoothly and disappears into the skin leaving no sticky residue.
  6. Light weight


    Received as a sample and I liked it so much that I purchased the full size. It's not world changing but it's a quality product for a good price. It's hydrating and lightweight and with my acne prone skin it caused no irritation.
  7. Lightweight and good for my combination skin


    I have a oily combination skin and this product doesn't cause breakout and it keeps my skin hydrate for the whole day.
    Nature smell and simple ingredients, keep my skin healthy.
    Compare to Skinceutical B5, this one is more affordable.
  8. Hydration


    Feel skin smoother and hydration ,and no breaks outs
    Will buy again
  9. Great starter


    I have normal to oily skin. I bought this an an intro to face serums. It’s a great starter. Whilst it’s both gentle and hydrating I will consider moving to retinol after going through this bottle. Goes on nicely and feels lush on the skin.
  10. Awesome and not sticky


    First time trying this brand and product and absolutely loved it! Not sticky at all but thick enough for it to feel effective! Layers well with makeup and other skincare. The little tube thing actually has measurement on it to let you know how much you are using - very helpful. A little also goes a long way, I don’t use as much as the recommended amount, half is sufficient to cover my who...
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  11. Hydration in a bottle


    Ahh this serum is fab! It’s hydrating and easily absorbed into the skin without leaving a sticky feeling, easy to apply other products on top of it too. I’ve just changed over from ASAP B super complex and not looking back.


    I LOVE this product. I bought this during the 15% off top 10 AB sale lately; it's amazing. Soaks in so easy. Decent size. Not sticky or tacky. Will do an update review in a few months to see further results.
  13. incredible


    This is a wonderful way to try the range! I always take it with me when I’m travelling, great for the plane!
  14. Love this serum, keep coming back to it.

    Medik8 Hydr8 B5

    Have used several HA serums and I'd have to say that this has been my favourite thus far. I recently switched to another highly rated HA after using this one for a while and this one still comes out on top. I have combination skin with a bit of post pregnancy rosacea and I find this feels really nice & hydrating (without being too much) on my skin.
  15. Can't live without it!


    I was happy to add this to my skin routine. It has been the only hyaluronic acid ive tried but I feel like it gives my skin a big "drink" which makes it plump and seems to smooth everything out. I only apply5 drops and it makes SUCH a difference. Won't ever try any other product this is perfect
  16. It's OK


    Received a sample, won't buy the full size. Too expensive for just average performance. But it's good to try for sensitive skin people because it's really gentle
  17. Handy hydrator


    This serum is great for me on days my skin is feeling a bit irritated or sensitised. It layers well with other products and hasn’t broken me out.
  18. Skins best friend


    Used this for 5+ years, then thought id give it a change and use the Drunk Elephant B-Hydra serum, and regretted it. Went back to this product and have been using it since. Its got a better packaging than the Drunk elephant, less creamier so you can easily combine with a vitamin c or other serum. Results after one application and on the spot!


    this is pricier for a HA serum but I LOOOOVE this because a) it lasts a good three months with twice a day use since you don't need much and b) its extremely cosmetically elegant as it is one of the few HA serums that dry down and don't stay sticky. I love this and I've already bought another one!
  20. Liquid gold in a bottle!


    Absolutely love this product! I have been using it for over a year alongside the Medik8 clarifying foam and balance moisturiser. It provides instant hydration to my skin and leaves my skin feeling soft and smooth. Worth every cent!
  21. Immediate results


    You put this on after you wash your face and honestly you will feel the results instantly. I wouldnt use it on its own, and definitely need to seal in the hydration with other serums + moisturiser as soon as you apply it. I use it together with my Vitamin C serum and its so hydrating.
  22. Love


    High recommend to use with Retinol .6% serum and C tetra in the AM & PM.
    Your skin feels hydrated straight away after putting it on.
  23. Rehydration


    This really does help hydrate your skin! fast absorbing!
  24. Sooo hydrating!!


    This serum is a must have! It is so hydrating and will leave your skin smooth glowy and looking beautiful
  25. This serum is a must in every girls skin routine! I’m on my third bottle & absolutely love it .


    This product Hydrates & keeps the skin looking moisturised.
  26. Skin feeling softer and looking plumper


    Having read all the reviews, I decided to give this product a go as my first serum. I apply at night before moisturiser and have to say, I love the results. My skin feels softer and appears to be plumper in the mornings. I feel like after a month, my skin is looking soo much better. You only need to use a very small amount, so the pricetag is worth it.
  27. Skincare regime must-have


    This is the best serum that I have tried. It's a light-weight formula that's hydrating and doesn't clump when layering other skin care products. I use this morning and evening after applying my Medik8 C-Tetra Serum.
  28. No sticky finish


    I received this as a sample. I don’t feel this is the best hydrating serum out there, but I love how it leaves behind no residue or sticky film, goes well with skinstitut moisture defence normal.
  29. Does the job


    I received this product as a sample and I enjoyed using it. It hydrated my skin really well and made it supple whole using it with my regular moisturiser.
  30. Very Hydrating!


    An amazing serum which did a great job o hydrating my dry skin! I apply it before bed and wake with glowing, soft skin. It also wears well under make up to ensure my face is well hydrated throughout the day. Absorbs well and my skin loves it!
  31. Skin slurps it up!


    I can’t live without using hydrating serums! I was using ultraceuticals B2 before this. I feel they are comparable and I love that medik8 absorbs super quickly instead of having to wait a little before applying other products. So far I’m impressed and happy with the ingredients!
  32. Super hydrating


    Love this serum! I was recommended this at a skincare salon to help with hydration. It is extremely hydrating, lightweight and soaks nicely into the skin. Great to use before your moisturiser and a little goes a long way. Definitely worth the cost.
  33. Lovely hydration

    Ms Z

    I recently received this sample and I really loved it especially now for winter has my skin was really dry it plumped my skin and wasn’t heavy at all. Still have some left has a little goes a long way.
  34. Hydrates and plumps skin


    I have been using this product for years! It is my go to product when my skin is feeling on the dry side, particularly during winter. I use this product in conjunction with a vitamin c serum (medik8 also) and the results are amazing. My skin feels hydrated and plump and my skin does not feel oily at all (I have oily/combination skin). Would definitely recommend!
  35. Super lightweight but hydrating


    I really enjoy this serum! It is super lightweight but keeps my skin hydrated. Amazing product!!
  36. Hydrating and NOT sticky


    This serum is perfect if you are looking for a simple hydration step in your routine - it does not leave sticky finish on the skin and I notice an instant plumping effect after it has absorbed. This works amazing if applied following the Medik8 Vitamin C serum and onto wet skin too as it locks in the hydration! A must have!!
  37. must-have

    Bonnie-Jade (Adore Beauty Staff)

    This serum is a game changer! Best HA I have tried. Provides instant hydration, is lightweight and easy to add into any routine
  38. Hydration


    I have really dry and dull skin during winter and trying to find something that isn’t heavy on my face was really hard! Then I found this product! I use it every day and night and my skin has never been more hydrated and soft! The oil is not greasy as you would think it would be. A definite must have for your skin care regime
  39. So lightweight and quick absorbing


    I received a sample of this and liked it. I was surprised at how quickly it absorbed into my skin and it has great spreadability so a little bit goes a long way. There was no stickiness or tackiness like some other serums. Keeping an eye on this one once my current serum runs out.
  40. Love it!


    Received a sample of this ages ago and have used it predominantly as a serum after double-cleansing to remove makeup since I've found it to be more calming on my skin than all my other serums! Follow it up with a face oil (The Ordinary Borage Seed) which glides on smooth after the serum, and in the morning my skin is taut, smooth, and super clear..which is rare for me haha!
  41. Love this product


    Got this as a sample from Adore with another purchase. I have combination skin that can get very dry but moisturising at night usually causes breakouts. This product has absolutely saved my skin and I have stopped breaking out. I’ve noticed my skin is glowing and my fine lines have disappeared. It soaks in to your skin straight away. I will not go without this product in my routine ever again.
  42. Hydrating


    Received as a sample, will be purchasing the full size after trying the sample!
  43. Love this!


    I love this serum so much! I got this as a sample and I have fallen in love with it. It makes your skin so smooth and dries super fast, and it's not sticky at all. I just wish this wasn't so expensive! I don't know how I'm going to go without this now.
  44. My favourite serum


    This has been my overall favourite serum. I'm just about to try Medik8's stronger B serum, but honestly can't imagine it being any better than this.
    It absorbs straight away and goes we under makeup.
  45. Love


    Medik8 is one of my favourite high end brands. This serum is nice, but just being a basic vitamin b serum I wonder if it's worth the price tag
  46. Lightweight and hydrating


    Received a sample of this. Pleasantly surprised. I have combination skin (which gets really dry in winter) and I feel like I have to choose at nighttime between leaving it dry or risking spots in the morning. Used this before I went to bed and was really happy. It was really lightweight and soaked up without leaving any residue. Just felt really nice on my skin. Skin looked nice in the morning and...
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  47. Great hydrate


    Got it in medik8 travel kit from adore great way trying out new things.
  48. Dewy


    Very hydrating serum especially over winter but it’s a product that is a must have. If your using any retinol products this will help keep your skin looking plump and dewy. I love it and will repurchase.
  49. Just love this serum!


    I have combination skin but tends to get quite dry in winter months. Hence, extra hydration is a must. I received this product as a sample. Although, I have used this product before and have loved it, I just found it too expensive so I didn't repurchase. Now that I have used the sample, it has just reminded me how good this serum is. It provides the hydration I need, brightens and smooths my skin ...
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  50. Great serum!


    I initially received a sample from AdoreBeauty and I thought it was nothing amazing. However, I decided to give it another try (blame the reviews!) and bought a full sized bottle. You know what? I loved it! I have been using Vitamin C serum during the daytime, and this is the perfect serum for a nighttime. Loving the result so far!
  51. Hydration dream


    I recently received a sample of this Serum, I’ve been using it at night time on my combination skin, I found a flash my skin more hydrated and smooth looking.
    I would definitely consider purchasing The full size products in the future.
  52. Hello Hydration


    This is a great staple and after-cleansing step. I always spray a water-mist after using this, just to ensure it pulls moisture from the out-in, not the other way round!
    So soothing and a quick dose of deep-hydration.

    I removed a star because once you discover the Medik Hydr8-Intense, this product shines a little less. - BUT this is still a great product, and I would always su...
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  53. Amazing overnight results


    I recently got this as a 10ml sample with a purchase and to be honest i loved this more then the new serum i had bought! It goes on smooth and absorbs quickly its not greasy. The difference it makes overnight was amazing, my skin hydration softness and the glowing texture blew me away! highly recommend it.
  54. Great product


    Very hydrating on my combination skin soaks in well
  55. Lightweight non greasy


    Recently received a sample of this, a little goes a long way. Lovely and hydrating. Not sure if I’d purchase a full size due to price.
  56. Plump skin

    Ms z

    I was really excited when I received a 10ml sample of this as I heard great reviews on this product. I really liked how it gave my skin hydration and made it looked plump the price is a little steep so will save before I purchase
  57. So hydrating, changed the way my skin feels!


    I purchased this product a few months back and have been using it religiously since then. My skin was surface dry and would quite flaky. I was this every night and have noticed such a difference the next morning, my skin is plumper and makes applying makeup effortless! Just one tip, make you apply this product in a damp environment as it works a lot better, I usually apply straight after the showe...
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  58. great product


    I received this as a 10ml sample and i am really enjoying it - it absorbs into the skin nicely. full size is a bit pricey but worth it.
  59. I am onto my third bottle!


    100% lightweight and fast absorbing. I am prone to oiliness if products are heavy and the serum makes my skin feel soft and plumped. I’m into my third bottle and one of the best hydration serums I have used. Highly recommend!
  60. Wonderful!


    My friend who has been using and loving this gave it to me to try, will definitely be purchasing!!! Soothes and hydrates my skin!
  61. Soothing and hydrating


    This is a lovely serum! It feels really soothing (think that's the b5?) and the hyaluronic doesn't feel too sticky on the skin. I mix it in with a C serum occasionally on damp skin. Works well under my sunscreen and makeup.
  62. Just like the old one


    This is a new one with more ingredients, as the old one was purely hyaluronic acid. But works just as great if not better because it doesn't evaporate as quickly.
  63. Medik8 B5


    I have purchased my second bottle of this magic!
    I have very dry skin and this product helps so much! Makes my face feel so plump after every use!
  64. Love this product


    I have been using this product for over a year now and definitely noticed a difference in the hydration of my skin. I have combination/ dry skin and this product paired with the Medik8 C tetra cream have really improved the overall hydration of my skin.
  65. Lightweight hydration


    Have just purchased my second bottle of this product. I have very dry skin, especially after my micro+LED appointments, and this serum fixes right up. I love how quickly it absorbs into the skin and I feel like it helps all my other products absorb quickly too, making my skincare routine much faster. Makes my skin feel silky smooth, I will definitely be continuing with this product in my routine.
  66. Worth it!


    I got this beautiful serum as part of a free gift with purchase. A little of this product goes a long way. You apply only 6 drops to your entire face and BAM! Extreme hydration for my very dry skin, it leaves you with a subtle feeling and works best when used at night before bed time, for the ultimate beauty sleep. It is quite pricey for the full size, but go on spoil yourselves! It's very luxurio...
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  67. It’s not bad


    This isn’t bad, it smoothed my skin but that was about it. The intense version is 100x better showing better results.
  68. Cured my flakiness


    This serum is what I recommend to all my friends. I've used a lot of different one in the past but this one is the best. Leaves the skin feeling amazing and hydration lasts all day
  69. Perfect hydration


    This product delivers amazing lightweight hydration. I used to struggle with hormonal acne, and started using this product after antibotics to manage my skin caused dryness and an itchy tightness. This product was amazing at delivering perfect hydration without making my skin oily. I used it liberally twice daily in addition to my normal moisturiser and it made my skin noticeably plumper. I now us...
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  70. Hydration!


    I love this product a little goes a long way. Keeps my skin feeling hydrated and supple. I use it AM and PM after my Medik8 Vitamin C serum and then add a thinker moisturiser/ humectant at lock it all in.
  71. So hydrating


    My skin, although combination is quite dry. This is an absolute must have. It conceals fine lines with its hydrating properties and my skin literally drinks this stuff up. A beautiful product
  72. Amazing hydration I use morning and night and my skin never becomes dry no matter what the weather.


    It is light and does not clog my pores. It provides hydration for the whole day and works perfectly under my night serums I am on my 4th bottle and would highly recommend
  73. Really like this product


    I have been using this product for over 6 months now as part of my morning routine and I love it. It goes on very smooth and is absorbed very quickly. My hairdresser had noticed my skin looking dull in some areas (perhaps because I don't always drink as much water as I should...) but this product has my skin looking brighter in the morning to the point now where I have stopped wearing as much make...
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  74. Good


    My skin likes this. It looks hydrated and plump after I use it!
  75. My Skin Drinks This UP!


    I recently had to purchase after my facialist used this after a micro. I was blown away with how quickly my skin needed this hydration. I use twice daily morning and night and love the plump feeling i now have. Cannot do without!
  76. Really good


    I really liked this serum! Works well and my skin would always look healthy and hydrated. I have since started using “the ordinary” version instead and found it works just as well. This is still a really great serum and does what it claims
  77. Hydrate and plump


    This is a great product which I have consistently re purchased. I have combination skin with the odd breakout and this sits so well on the skin under makeup. It’s great at hydrating the skin and calms down any redness or irritation. I really like the consistency and a few drops cover the whole face. I bought the B5 from The Ordinary recently and immediately regretted it, when compared to Medik8 t...
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  78. Hydration station


    I love the way this feels on your skin. You’d think because it’s gloopy coming out of the bottle it’d stay like that on your skin but no! It gives you ample time to apply to your face before drying. I love it, gives the skin a nice glow. I use it every morning.
  79. Serum


    I got the 10ml as a gift with purchase and it’s good but not something I’m rushing out to buy. It’s very similar to The Ordinary serums only this one doesn’t leave a sticky feeling and hydrates pretty well as a base
  80. Best hydrating serum


    Initially, I received a 10ml bottle of this as a tester with one of my Adore Beauty orders... at the time I was using the Hylamide Sub-Q Anti Age serum which I found quite heavy (it does have a number of additional ingredients in it, which would definitely be suitable for someone with more mature skin than I) so I started swapping Medik8 into my morning routine and the Hylamide one to night time. ...
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  81. Expensive but indispensable


    If you're on the fence about this one just try it and keep your routine up. Your skin will thank you.
    I was confused about how this could be moisturizing as it's a gel.
    I don't know how it works, I just know it works.
    My skin is plumper, my texture is smoother and skin has a nice glow about it.
    This has cemented itself in my pm routine. I love it.
  82. Love it


    This is so helpful for rehydrating the skin, especially as I have dry skin! It also provides long-lasting hydration. I received this as a free sample and am looking forward to purchasing the full size!
  83. nice product


    Nice sample from Adore Beauty. Super hydrating and not sticky at all.
  84. Super hydrating!


    Been using this for years. Super hydrating and calming on my skin
  85. Great product!


    This serum is the best iv tried! Not sticky at all and makes my moisturiser glide on. Highly recommend this product for anyone who wants that extra hydration.
  86. best hydration ever

    perfecting skin

    i have looked for a good hydrating serum for a long time but i think i have found it. this serum is so light and hydrating and leaves the skin so soft. i received it as a sample but i think i am going to switch to this hydrating serum.
  87. Hydrated skin without a greasy feeling


    I have dehydrated skin with an oily t-zone so was concerned about using this product as I thought it might make my skin greasier. I was wrong. This serum is so light and dries quickly leaving my skin feeling moist but not wet or greasy. I use this twice a day and it has definitely addressed the dehydration. My chin, forehead and nose used to be peely and dry but since using this serum it has left ...
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  88. Love this hydrating serum!


    Love this serum, it absorbs well and leaves my skin feeling so good.
    Having dry and aging skin, this serum works wonders. It is pricey but you only need a little bit so lasts pretty well.
    Have ordered a few times and will continue to again!
  89. Take it or leave it


    I received this serum as part of an Adore Beauty promotion with my last order. I liked using it but I don't think I will buy the full version. It goes on nicely, doesn't feel sticky on application and did make my face feel more hydrated, however for the price, I definitely wasn't blown away by it and it wasn't one of those products that I have to have! I didn't really see any different results co...
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  90. Hydration plus!!


    I spend a lot of time in an aircraft which drys my skin out like beef jerky.
    I use this product morning and night, it's a staple for me! It re-hydrates my skin and leaves it feeling fresh.
    I absolutely love this product!!
  91. Leaves skin beautifully soft


    I love this! My skin has never looked or felt better. It’s so smooth and it’s made my skin look amazing. Definitely worked wonders for me
  92. Easily absorbed, feels great on the skin. A little goes a long way.


    I received this product as a free sample and love it! I love the texture and how it goes onto my skin and how quickly it's absorbed. A little really goes a long way. The serum absorbs really well and it's not sticky or greasy, it kind of feels like there is nothing on your skin once it dries but your skin feels great! I have used other serums in the past and so far, this is my favourite (I had pur...
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  93. Drink of water for your skin


    I love this product. I’ve got very dry skin, particularly my nose. I wanted a little extra hydration kick for a recent long haul flight and found this was exactly what my skin needed. It’s light and not oily at all. It made a huge difference compared to how my skin normally feels after 24 hours flying.
  94. Like, but not LOVE


    I liked this serum, but I felt the consistency and the effect did not blow me away.
  95. Gorgeous product


    I received this as a gift with purchase and I would not hesitate to purchase the full size product. It really does hydrate your skin!
  96. Amazing product for dry skin


    I received this item as a sample and was so impressed that I purchased the full size product. Extremely rehydrating for dry, aging and sensitive skin without feeling heavy. I apply this serum before applying my vitamin A serum at night and my skin feels amazing in the morning. This is definitely something I will keep purchasing.
  97. My new favourite serum!


    I have been wanting to try this serum for a while and recently received one as a sample. I have blemish free skin, but it is dehydrated due to medication. I have found this serum to be incredible at hydrating my skin so it not only stays healthy, but make up finally glides on and can be retained during the day without separating or cracking. I will definitely buy the full size in future!
  98. Definitely buy again


    I have recently received this as a sample with a purchase, and love it!
    My skin is beautifully hydrated with it, I noticed the difference after one application.It's a great texture, and absorbs quickly.
    Will definitely be purchasing the full size product
  99. Holy Grail but wallet fail!


    I got the 10ml sample with purchase of this product in the Adore Beauty promotion. I was curious and skeptical of the product claims, especially the product use. All you need is 6 drops for the entire face, and at first it doesn't feel as though you have applied any product on your face, there was no feeling that the product has satiated the skin. However, I applied this at night and I woke up in ...
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