Hydraboost HA Serum
Our Hydraboost Hyaluronic Acid Serum is designed to provide deep, lasting hydration with a blend of high, medium, and low molecular weight hyaluronic acids (HA). High molecular weight HA sits on the skin’s surface, creating a protective hydration layer that feels smooth and instantly refreshing. Meanwhile, low and medium molecular weight HA molecules sink deeper, boosting hydration within the skin barrier. Studies suggest that low molecular weight HA can reduce the appearance of wrinkles and fine lines. Lightweight and versatile, Hydraboost is perfect for daily use as the first step in your routine for plump, hydrated skin.
Featuring
- Enhanced daily skin hydration
- Plumper, healthier feeling skin
ESK Benefits
All skin types!
Hyaluronic Acid
The optimum size of Hyaluronic Acid for skincare is still a topic of research. Emerging evidence suggests that medium-size HA can support skin hydration and help improve the appearance of skin smoothness and plumpness.
Panthenol
Panthenol (provitamin B5) is a humectant - meaning it helps attract and hold moisture in the skin. Once absorbed, it’s converted to pantothenic acid, a naturally occurring compound in the skin that supports hydration and helps maintain a healthy skin barrier. It’s well tolerated and commonly used in products designed for sensitive skin.
Apply after cleansing as the FIRST step in your skin care routine.
Can be used morning and or at night (or even several times throughout the day!)
If irritation occurs, discontinue use.
Brighten Your Skin
While early research shows that HA may have wider benefits. It is also extremely important for hydration, being able to bind water molecules over 1000 times its own weight. HA is also a key humectant- an ingredient that draws water into the outer layers of the skin.
Early studies show that when applied to the face, Hyaluronic acid can give you significant improvements in your skin’s overall appearance, with fewer fine lines and wrinkles, as well as less roughness.
Panthenol is a humectant and emollient (creates a film on the surface of the skin, helping the skin reduce water loss). It assists with wound repair, improves skin hydration and barrier repair, and can also calm the skin.
Water/Aqua, Propanediol, Pentylene Glycol, PEG-16 Macadamia Glycerides, Sodium Hyaluronate, Panthenol, Caprylyl Glycol, Benzyl Alcohol, Sodium Phytate, Alcohol, Dehydroacetic Acid
Frequently Asked Questions
Hydraboost is a lightweight hydrating serum formulated with Hyaluronic Acid (HA) at three molecular weights, plus Panthenol (Provitamin B5). It's designed to deliver deep, lasting hydration, support the skin barrier, and leave skin looking plumper and smoother.
Many HA serums use only one molecular weight of hyaluronic acid. Hydraboost uses all three, high, medium, and low, for a more comprehensive hydrating effect. The formula contains 1.6% total HA (0.70% high, 0.70% medium, 0.20% low molecular weight) plus 1.5% Panthenol, making it a purposefully dosed, evidence-informed formulation.
It should be applied as the very first step after cleansing, before any other serums or moisturisers. If using it alongside active serums like Vitamin C or AHA/PHA products, apply Hydraboost first to maximise absorption and effectiveness.
You can use it throughout the day over the top of other products as needed!
Before & Afters
Over 80,000 people are improving their skin with Evidence Skincare.
Alex H
Verified
Dry Skin Anti-Aging Kit*, Calming Cleanse, Zinc Shade, Smooth Serum, Ultimate A, Acne-prone/Oily kit
"Prior to using ESK my skin was horrible, I tried lots of different skin care products, medication, saw a skin care specialist and nothing worked. It was my mum that actually found ESK and got me using the products and within a week my skin had already cleared up. I absolutely love how they feel and how reliable this brand is. I use my products every day morning and night and don't know what I would do without them!"
Alexandra B
Verified
Rosacea Skincare Kit - Anti Redness*, Anti-Aging Sensitive Skincare Kit, Calming Cleanse, B Quenched, Zinc Shade, Ultimate A
"I have been using the ESK skincare range for 4 weeks now after a recommendation from a close friend. I found this was great in treating both my acne and rosacea and reduced the appearance of the bumps I had on my skin. The redness hasn't yet disappeared but it has certainly reduced in it's severity and my skin feels much smoother and less oily as well. A great range of products that I can highly recommend."
Alida H
Verified
Hydroxy Cleanser, C Forte, Enlighten Gold, Zinc Shade, Smooth Serum, Hydraboost HA Serum, Ultimate A Gold
"So i’ve been using ESK for about 6 weeks now and i’m super happy with the results. Photo (no filter on either) on the left is before incase it’s not obvious. I have the pigmentation kit and it has made my skin feel amazing. I think there’s a difference in appearance as well. I love the ritual of putting on the different steps morning and night and I will continue using the kit now as it’s part of my daily ritual."
Alison C
Verified
Acne-prone/Oily kit, Hydroxy Overnight Mask, Calming Cleanse, Smooth Serum, B Calm, Ultimate A+, Zinc Shade
"I have been using your skincare for quite some time now. Recently I had a large break out on my chin- I ordered the kit suggested for acne. I cannot believe the results and how quickly they were reached! I’ve attached some before and after photos. This was within a week of using the products- a notable difference. Thanks for giving the confidence of great skin!! It is magical skin care!"
Allison H
Verified
Rosacea Skincare Kit - Anti Redness*, Anti-Aging Sensitive Skincare Kit, Calming Cleanse, B Quenched, Zinc Shade, Ultimate A
"I’ve been using the Rosacea skin care kit for 5 weeks and the products have been great! Often I have trouble finding skincare that doesn’t irritate my skin and make it red and itchy but ESK products have not caused any redness or itching at all. My skin feels soft and well hydrated. I love how easy the products are to use and this makes my routine so quick! I will continue to use ESK. I also love that I’m supporting Australian owned and made products."
Andrea K
Verified
Mature Skin Anti-Aging Kit*, Dry Skin Anti-Aging Kit*, Hydroxy Cleanser, Zinc Shade, Smooth Serum, Ultimate A
"I have been using ESK skincare products for about 8 months now and I’m absolutely loving the results. I’m in my 50’s and was concerned with ageing and dryness. I find the ESK products have really improved my dry skin and overall skin texture. I also find the pump application great and one pump gives you the right amount so you’re not wasting any product. I was initially drawn to ESK because it is Australian made, evidence based and cruelty free but have continued with it because I’m loving the results and find it’s great value for money. All in all I’m very happy with the products and couldn’t recommend them more highly."
Angela B
Verified
Rosacea Skincare Kit - Anti Redness
"I've had red inflamed skin for most of my life and tried so many skincare treatments with minimal success. Since using the anti-redness bundle for a month now I have noticed a definite improvement in my overall skin at last! Can't wait to see the benefits long term!"
Anika S
Verified
"Really enjoyed these acne microneedle patches! I always have random breakouts so I will definitely will be carrying these around for those emergency breakouts..."
Anna D
Verified
Mature Lighten & Tighten Kit*, Mature Skin Anti-Aging Kit*, Calming Cleanse, Enlighten, Zinc Shade, Smooth Serum, Ultimate A
"Here are my before and after photos taken 5 weeks apart. I am really enjoying my ESK skincare. My biggest concern was my uneven skin tone due to sun damage. I think after using these products for such a short time the difference is remarkable. My skin feels hydrated and plump and the tone is much more even. I highly recommend these products as they are very easy to use with the am and pm marked on the bottles. They really do work."
Anneke B
Verified
Rosacea Skincare Kit - Anti Redness*, Anti-Aging Sensitive Skincare Kit, Calming Cleanse, B Calm, Zinc Shade, Ultimate A
"I think the photos speak for themselves! My skin was so inflamed and tender. The results are mind blowing! My skin is not only less tender and inflamed but also less itchy and reactive. I am able to wear far less makeup and feel more confident."
Antoinette G
Verified
Mature Lighten & Tighten Kit*, Mature Skin Anti-Aging Kit*, Calming Cleanse, Enlighten, Zinc Shade, Smooth Serum, Ultimate A
"Can you turn back the years? Perhaps not but it appears that you can minimise the damage that many of them caused. I have the Mature Pigmented Kit and I love it. These two photos were taken at the same time in the morning bot with no products on and a month apart. I think that my skin looks brighter, smoother, healthier and thankfully younger."
Ashlee C
Verified
Rosacea Skincare Kit - Anti Redness*, Anti-Aging Sensitive Skincare Kit, Calming Cleanse, B Quenched, Zinc Shade, Ultimate A
"I have been using ESK for about a year now and I absolutely love it! I have always had quite a red face and using the rosacea kit it has definitely calmed it down and also helped with my acne! But not only that I love how soft the products leave my face feeling. Can't rave about this product anymore!!"
Becky G
Verified
Calming Cleanse, B Quenched, Zinc Shade, Ultimate A, Sensitive Breakout Kit*, Rosacea Skincare Kit - Anti Redness*
“ESK has been a godsend during these strange bouts of eczema I’ve suddenly been experiencing. I love how a “formula” was tailor made to my skin type and situation. I can’t get enough of the Ultimate A and the B Quenched- they feel so soothing on my face at night when the eczema tends to start flaring up.”
Belinda C
Verified
Mature Skin Anti-Aging Kit*, Normal Skin Anti-Aging Kit*, Hydroxy Cleanser, Zinc Shade, Smooth Serum, Ultimate A
"After using ESK skincare for the past 2 months or so I have noticed a huge difference in the clarity of my skin. It FEELS so clean and fresh, and the size of my pores has diminished. I LOVE how these products feel, and how easily they go onto the skin. It’s such a simple process, clearly numbered, making it quick and easy to use. The customer service is outstanding, not to mention super- fast delivery. I will not be changing skin products any time soon! "
Camille Z
Verified
C Serum Lite, Enlighten Gold, Zinc Shade, Smooth Serum, Ultimate A Gold, Hydroxy Overnight Mask
"My skin concerns were acne and pigmentation. Since using ESK, I have seen an incredible difference in my skin and can't be happier. I have recommended ESK to all my friends and family and tell them that they will be very impressed with the products and customer service."
Carol C
Verified
"At first, I wasn’t sure how well it worked, but now that I’ve seen the comparison photos, I’m really impressed. It’s way better than I thought it was going to be. When I first started using it the first couple of days, I thought there was a bit of tightness and dryness, but when I got used to using it, I realised that wasn't really the case, I think it was just a case of my skin settling down. A couple of times I had to use the Enlighten on the evening, but other than that I just stuck to my usual cleanse, tone, serum and then using the Enlighten and I've been really pleased with the results."
Carolyn R
Verified
Regular Pigmented Kit, Hydroxy Cleanser, C Forte, Enlighten, Zinc Shade, Smooth Serum, Ultimate A
"Very pleased. Dear husband remarked a positive effect on crows feet at Christmas. I can really see the change on my aging/ sunspot. Also between my eyebrows... I've been impressed with the results of using ESK for 3+ months. There is noticeably less splotches to my skin (across cheeks/under eyes) and also the pigmentation at my right eye is much lighter."
Carrie B
Verified
Mature Skin Anti-Aging Kit*, Normal Skin Anti-Aging Kit*, Calming Cleanse, Zinc Shade, Smooth Serum, Ultimate A
"I am extremely happy with ESK and have used it before. I do love the travel kit which I took to Europe when I last went a few years ago and loved the convenience of smaller containers. I do love your product and feel it has improved the texture of my skin and I feel the vitamin A and C helps to improve my complexion."
Cathy S
Verified
Calming Cleanse, Enlighten, Zinc Shade, Smooth Serum, Ultimate A, Mature Lighten & Tighten Kit*, Mature Skin Anti-Aging Kit*
"I was very sceptical about this skin care range can it do what it claims to, it most certainly can I have noticed a big change to my skin it is alot clearer feel of redness and my pigmentation has improved ALOT! So if in doubt try it you will be very happy with the results and so little is needed so will last a long time alot more than other products on the market😊😊 plus not much makeup will be needed to cover skin as it glows"
Expert Advice
Expert Advice
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Our latest product offering, a deeply hydrating serum, Hydraboost HA Serum combines the benefits of hyaluronic acid at all molecular weights with nourishing Panthenol for a soothing moisture hit!
Everybody is talking about HA serums these days but why?
Hyaluronic acid
Hyaluronic Acid (HA) is a key component of the scaffolding of the skin and is essential for wound healing as well as elasticity in the skin. HA promotes skin cell regeneration and stimulates the production of collagen. It is also extremely important for hydration, being able to bind water molecules over 1000 times its own weight. HA is also a key humectant- an ingredient that draws water into the outer layers of the skin.
Early studies show that when applied to the face, Hyaluronic acid can give you significant improvements in your skin’s overall appearance, with fewer fine lines and wrinkles, as well as less roughness. It’s also been shown to improve your skin’s hydration, as well as boost collagen and elastin.
Panthenol is a moisturising ingredient with both humectant (binds with water) and an emollient (forms a light film over the surface of the skin) properties. It improves skin hydration as well as skin barrier function and has anti-inflammatory properties.
Hydraboost Uses
1. To give your skin a hydration boost
2. To combat some of the signs of aging in the skin
3. Early studies have also noted improvements when applied to skin with rosacea and seborrheic dermatitis.
Hydraboost HA serum’s unique formulation
Our serum has 1.6% Hyaluronic acid comprising
• High Molecular weight HA 0.70%
• Medium Molecular weight HA – 0.70%
• Low Molecular weight HA – 0.20%
• Panthenol (provitamin B5) 1.5%
Usage instructions
Apply after cleansing as the FIRST step in your skin care routine. Can be used in the morning and (/or) at night
If using in conjunction with other active serums such as a Vitamin C or an AHA or PHA, apply the Hydraboost HA Serum first, and then your day or night routine to maximise effects.