When it comes to skincare, there are two things we almost always want from our routine; to leave our skin hydrated, and to help keep the signs of ageing at bay for as long as possible. If that sounds familiar, then Medik8’s Hydr8 B5 Intense might be exactly what your skincare routine has been missing.
The hyaluronic acid serum is a super-charged version of the brand’s best-selling Hdry8 B5, with added ingredients to give your skin an instant boost of moisture within 24 hours. You can pick up a full size 30ml bottle for £59, or a travel-friendly 8ml size for £20, with shoppers praising it as “definitely worth the money” in reviews.
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The main ingredient in the Hydr8 B5 Intense serum is multi-weight hyaluronic acid, which helps to attract and retain more than 1000 times its own weight in water. It draws moisture from the lower layers into the upper ones, creating a nourished, supple and hydrated glow.
What sets this apart from other hyaluronic acid serums is the addition of other ingredients, including vitamin B5 which helps your skin to retain moisture and regenerate new cells for a plumper look. It’s also charged with Natural Moisturising Factors (NMFs) like glycerin, five different amino acids, lactic acid and creatine to maximise hydration.

You’ll also find plenty of other antioxidant ingredients which help encourage collagen production and prevent moisture from breaking down in your skin. To get the most out of the Hydr8 B5 Intense serum, Medik8 recommends applying six drops to freshly cleansed skin morning and night – and don’t forget your neck and décolletage.
If you’re not quite ready to spend £50 on the Medik8 serum, you could also snap up the La Roche-Posay Hyalu B5 Serum with Hyaluronic Acid instead. The serum is £45 for a 30ml bottle, and contains both hyaluronic acid and vitamin B5 to hydrate and plump skin.
Alternatively, The Ordinary’s Hyaluronic Acid 2% + B5 (with Ceramides) is perfect for anyone on a tight budget, with a 30ml bottle priced at just £8.80, whilst a larger 60ml bottle is £15.50. It contains five forms of hyaluronic acid to help visibly plump and smooth skin, with pro-vitamin B5 to lock in moisture and ceramides to boost your skin barrier.
However, Medik8 shoppers seem pretty convinced that the Hydr8 B5 Intense serum is worth splashing out on, with one saying: “From a beauty therapist of 40 years, this product is unbelievable. So nourishing & anti aging, your skin will glow.”
Another agreed: “I Couldn’t live without this serum! It has become a staple in my routine and the immediate effects are phenomenal. I love how quickly it absorbs into the skin leaving it hydrated, feeling firm, plump and glowy! I’ve had no dry skin since using this serum and it’s one of my favourite medik8 products. Highly recommended and definitely worth the money.”
Whilst a third said: “Lovely, easy to apply product that has kept my skin calm and hydrated. Feels beautiful on the skin and settles quickly for the rest of the routine to be applied.”
However, the Hydr8 B5 Intense serum wasn’t such a big hit with everyone, with one writing:
“I think this is a MID products compare to others from Medik8. I didn't see lots of improvement and I finished all the bottle. I think you can find better hydration serums for less less money.”
With a second chiming in: “The feel of this serum is lovely but it doesn't seem to do that much for me. I do have quite dry tight skin in the winter so it was quite good for layering but I wouldn't repurchase.”
However others can’t get enough. One happy reviewer wrote: “I have used this for a year or more and can see definite improvement on fine lines. It's light and silky does not linger on the skin so quickly absorbed, would highly recommend.”
Another agreed: “My skin has become more elastic and smooth, it glows and has a beautiful healthy look.”
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