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Medik8 Hydr8 B5 Liquid Rehydration Serum 30ml 30ml

4.6 of 193 reviews


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4 instalments of $19.75

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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 193 reviews

91% recommend this product

  1. 133

  2. 46

  3. 12

  4. 2

  5. 1

Most Helpful Positive



I suffer from quite dry skin that never, ever feels hydrated. This serum is a game changer. After 3 days my skin is feeling plump and hydrated to the touch. I love this serum so much and am annoyed it took me so long to purchase!

Most Helpful Criticism

Still not 100%


This is the 2nd bottle I've bought. I done a review on it during the 1st bottle and was a bit "meh" on it. I thought I'd give it another go. It's very hydrating and the feel of it is a bit sticky when it first goes on but then sinks into your skin nicely. I always put a moisturiser on over it anyway. Will I buy a 3rd bottle? Not sure...
  1. Standard hyaluronic serum - hydrates well


    A reliable hyaluronic acid serum. I switched to Skinceuticals because I found this one more sticky and didn't really notice much 'plumping' effect (like I have with Skinceuticals) but definitely increases moisture in the skin and for a cheaper alternative this one is still quite good.
  2. Still not 100%


    verified purchaser
    This is the 2nd bottle I've bought. I done a review on it during the 1st bottle and was a bit "meh" on it. I thought I'd give it another go. It's very hydrating and the feel of it is a bit sticky when it first goes on but then sinks into your skin nicely. I always put a moisturiser on over it anyway. Will I buy a 3rd bottle? Not sure...
  3. Wow


    I suffer from quite dry skin that never, ever feels hydrated. This serum is a game changer. After 3 days my skin is feeling plump and hydrated to the touch. I love this serum so much and am annoyed it took me so long to purchase!
  4. A glass of water for your skin


    This product is like a glass of water for your skin.
    It's a no fuss hydration serum that won't cause any irritation at all.
    Can be used morning and night, and your skin will look so plump afterwards.
    Always apply a moisturiser afterwards though! (need to lock in that goodness).
  5. Great first step in routine


    A good first step in your routine. It’s light, hydrating, sinks in well and primes the skin for other layers such as C in morning or retinol in evening. Thin, wet texture
  6. Light and hydrating


    Love this serum - feels like water on the skin, absorbs quickly and is really hydrating! Initially purchased the ABC Kit to try Medik8 products - this is by far my favourite and I'm on to my third bottle. The only downside is the amount of product you get for the price - only 30ml in the bottle (and recommended to use day and night - I fly through this!) Wish it came in a larger size. Otherwise am...
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  7. The best


    Seriously the best it keeps the face so hydrated amazing 10/10
  8. Lovely but can’t justify the price


    verified purchaser
    This is a lovely serum. It applies beautifully, dries down and sits nicely under skincare and make up. But I found that I couldn’t justify the price. It’s only 30mls, and using it every day, only lasted me a bit over 2 months. I’ve since found another HA serum that does just as good a job at a more reasonable price.
  9. Light serum and luxurious!


    This serum is light-weight with a soft luxurious texture! If you are looking for a perfect light-weight hyaluronic acid this is perfect. Also great value at this price point.

    I personally prefer a heavier hyaluronic serum so I like the Medik8's Hydr8 B5 Intense. Nonetheless, this Hydr8 Rehydration Serum is still such a great product!
  10. Hydration


    I highly recommend this serum, I’m always restock it
  11. Not for sensitive skin


    I was given this as a sample and was excited as some of my friends rave about the Medik8 range. Unfortunately this did not work well on my skin. Firstly, after application it made my skin feel tight & dry, not nourished. There are many drums that I think can stand alone but this one definitely enquires moisteriser afterwards. Anyway, I persevered for three nights but at that point I then broke ou...
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  12. Love this serum


    This serum is so light weight, no offensive smell and a beautiful texture. I apply both day and night before moisturizer, and i find my skin feeling very plump and hydrated. Will definitely re-purchase when I run out.
  13. Love this!


    My favourite hyaluronic acid serum! Have repurchased this a few times now. I like how fast it absorbs and how there is no tacky feeling like with some hyaluronic products. Also sits well under makeup. I use this every morning and evening after washing my face - would recommend! Have tried cheaper products but don’t feel they work as well as this one.
  14. Juicy, and nourishing for my skin

    Alice Feez

    This is refreshing and plumps my skin up, so its nice and juicy before applying makeup. It feels a bit tacky after application and i often feel like i need moisturiser post-application. In the case of makeup application, this wokrs wonderful, as it holds onto my foundation, prolonging the wear as my skin is hydrated.
  15. Hydration powerhouse!


    I use this serum day and night, I am totally addicted to it! It hydrated like nothing else! I highly recommend this product as a must have in anyone’s routine.
  16. Great results


    Best serum for hydrating the skin and giving t a beautiful glow. Leaves it feeling very smooth also
  17. Must for summer


    This is a must for summer to balance the extra oil in the skin with hydration. You will see results immediately, i also mix it with my vitamin c serum
  18. very moisturizing


    I love this serum, its super hydrating and really helps my dry skin, especially during winter
  19. Sinks In Beautifully


    I received a sample of this but I already have the hydra8 b5 intense that I bought from Adore at beginning of this year however, I found this version to be much better at hydrating my skin. This one sinks in beautifully, is not sticky and feels so hydrating whereas the intense version is sticky and sits on top of my skin. Will purchase the full size of this one as soon as I use up the intense vers...
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  20. Amazing hydration!


    I have combination oily skin, and with a better skincare routine from my beautician, it is now normal-oily. I’m converting my makeup to Jane Iredale and Youngblood, as I found the foundation I was using (The Body Shop) looked amazing, but left dry patches on 2-3 prominent areas on my face. It took me a while to understand the difference between having oily skin and having hydrated skin. Once I tri...
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  21. Beauty in a bottle


    I love it how you see results INSTANTLY. After i wash my face, it start to pull after 5 seconds. Immediately put this on and pull no more!
  22. super hydrating!


    Love this so much! super hydrating and makes my skin look more glowy! prefect to use before applying makeup for that youthful glow!
  23. Hydrating smooth finish!


    This product is beautifully hydrating and the finish is beautiful and smooth and not at all sticky, can be worn under make up as your skin drinks this up!
  24. A definite must-have!!


    I bought this when starting out in my skincare journey, shortly after listening to the podcast episode with the Medik8 specialist. I have always had dry skin and this has changed that! This put my skin into a hydrated state to actually start using more active ingredients on my face without reaction.
    It is also amazing for after microneedling/microdermabrasion for repair, hydrating and calmin...
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  25. Sample


    Doesn't really helpful. Won't buy the full size. Don't really like the texture.but This brand's vitamin c is the Best
  26. Sample


    Received a sample recently, not surprised result thou. I have alternative serum for hydrating so this one for me is just average. But this brand is fantastic overall.
  27. 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
  28. 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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  29. 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.
  30. 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.
  31. 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.
  32. 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.
  33. 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.
  34. Hydration


    Feel skin smoother and hydration ,and no breaks outs
    Will buy again
  35. 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.
  36. 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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  37. 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.
  39. incredible


    This is a wonderful way to try the range! I always take it with me when I’m travelling, great for the plane!
  40. 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.
  41. 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
  42. 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
  43. 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.
  44. 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!
  46. 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!
  47. 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.
  48. 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.
  49. Rehydration


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


    This serum is a must have! It is so hydrating and will leave your skin smooth glowy and looking beautiful
  51. 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.
  52. 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.
  53. 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.
  54. 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.
  55. 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.
  56. 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!
  57. 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!
  58. 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.
  59. 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.
  60. 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!
  61. Super lightweight but hydrating


    I really enjoy this serum! It is super lightweight but keeps my skin hydrated. Amazing product!!
  62. 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!!
  63. 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
  64. 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
  65. 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.
  66. 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!
  67. 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.
  68. Hydrating


    Received as a sample, will be purchasing the full size after trying the sample!
  69. 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.
  70. 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.
  71. 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
  72. 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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  73. Great hydrate


    Got it in medik8 travel kit from adore great way trying out new things.
  74. 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.
  75. 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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  76. 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!
  77. 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.
  78. 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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  79. 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.
  80. Great product


    Very hydrating on my combination skin soaks in well
  81. 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.
  82. 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
  83. 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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  84. 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.
  85. 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!
  86. 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!
  87. 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.
  88. 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.
  89. 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!
  90. 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.
  91. 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.
  92. 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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  93. 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.
  94. 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
  95. 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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  96. 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.
  97. 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
  98. Review & Earn
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