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

Ships from our Sydney warehouse

5.0 - 5.5 ph

High, Medium, Low Molecular
Weight Hyaluronic Acid

Helps maintain
skin moisture

Sulphate-free

Paraben-free

ESK Benefits

Cruelty free
& Vegan

Free shipping
in Australia, UK, US & NZ*

Money back
guarantee*

100% Australian
made and owned

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

A hydrating serum formulated with Hyaluronic Acid and Panthenol to support the skin’s natural moisture balance.

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

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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.

Vikki G

Verified

Calming Cleanse, C Forte, Enlighten, Zinc Shade, Smooth Serum, Ultimate A

"I've been using ESK for one month to help with pigmentation and wow!

I feel like I have a brand new face. My skin is smoother and softer, dark spots have faded. It's taken years off in a really short time.

Everyone needs to know about ESK!"

Kelly K

Verified

Calming Cleanse, C Forte, Enlighten, Zinc Shade, Smooth Serum, Ultimate A

"Hi, my name is Kelly and I have suffered with problematic skin for most of my life. I had terrible acne and chicken pocks as a child that resulted in scarring. Then along came the fine lines and wrinkles. In just under two weeks, I have seen a massive change! The regime is incredibly easy to follow, you don’t need much of it and it is an Australian product! I am finally proud of my skin and cannot wait to see what my face looks like in a month! I am so grateful! Thank you Esk!"

Victoria S

Verified

Calming Cleanse, C Forte, Enlighten, Zinc Shade, Smooth Serum, Ultimate A

"...What an improvement!! Thank you I am so pleased!"

Leslie E

Verified

Rosacea Skincare Kit - Anti Redness

"I am so pleased with the progress my skin has made. Due to health reasons I have never been able to treat my rosacea with medication and in the past all the topical treatments I tried didn't seem to work for me. I just found good makeup and didn't go outside without wearing it.

(Side point - I love the blog tips about rosacea since they are really good information for people who are still struggling with it)

Now I feel much better about myself now my skin is improving, thank you so much for this. Because my skin is improving I finally convinced my husband to buy ESK too!

Thanks, Leslie"

Kim C

Verified

Calming Cleanse, C Forte, Zinc Shade, Smooth Serum, Ultimate A

"I've been using the pigmentation products for a month now, I'm very happy with the results, my brown spots have certainly faded, my overall skin is looking much better, and I'm looking forward to even greater results as I continue on using this fabulous skin care regime. I love the way my skin feels after each use and my makeup glides on to give a nice dewy effect which I haven't been able to achieve for some time. I'm feeling more confident in being able to reduce my makeup usage overall."

Jacqui V

Verified

Calming Cleanse, C Forte, Zinc Shade, Smooth Serum, Ultimate A

"I would just like to say how impressed I am with ESK skin care.

I turn the big 60 this year and have be looking for a skin care for mature skin. I was watching Sunrise and Ginni came on talking about ESK. So I thought I would give it ago and I loved the fact that it was made in Australia. I love the way the cleanser made my skin feel so clean and light and the way the products sunk straight into my skin. Which I have been looking for forever. Most products just sit on top of my skin which is frustrating and can be very expensive.

My skin looks smoother and plumper. Finally something that works 😊 Thanks ESK"

Gillian O

Verified

Mature Kit

"I have noticed an overall difference in the feel of my skin, it feels more plump and the colour has evened out. Wrinkles appear to have less depth. I have just started to use eye serum which I am excited about.

Extremely impressed with results so far, only regret is I wish I had started using it sooner."

Sharon Y

Verified

Calming Cleanse, C Forte, Repair +, Zinc Shade, Gentle Glow PHA Serum, Ultimate A

"The products were great, I am very impressed with my results and the care given to me by the team changing a product because of my chemotherapy. Outstanding... I believe in your products so much!

As a user of cosmeceuticals and active skincare for over 13 years and an ex user of prescription retinol, I can wholeheartedly say that ESK has made the biggest difference in the shortest timeframe of everything I've ever used.
I cannot recommend it enough."

Helen G

Verified

Hydroxy Overnight Mask, Rosacea Skincare Kit - Anti Redness

"Well what a remarkable change my face has had, I have now been using your skin now for 6mths and what a difference I have experienced, my skin not only looks heaps better but also feels amazing. The softness of the skin is unbelievable. Very, very happy and I have actually weaned myself off my medication for my skin. I have tried coming off it before and within a month my face would be a mess and would have to go back on to control the acne rosacea again.

I will attach photos of before treatment and now. Once again, thank you again for your amazing products."

Emma N

Verified

Calming Cleanse, C Forte, Enlighten, Zinc Shade, Smooth Serum, Ultimate A

"I can’t believe how much my pigmentation has settled down after 1 month. Also breakouts have disappeared. I’m so impressed. The products are divine! Thank you!!"

Gemma C

Verified

Hydroxy Cleanser, C Serum Lite, Enlighten, Smooth Serum, Ultimate A

"My tailored ESK skincare set has exceeded all my expectations. I actually didn’t realise how dull and badly pigmented my skin was until seeing my own 4 weeks progress and honestly being in complete shock of the difference it has made!

I feel so much more confident now to let my natural skin be on show and not having to hide it behind a face full of makeup. I will 100% continue to use this regime as if it can make this difference in just one month imagine what the long term results can be.

Would highly recommend them to anyone that is facing their own skincare issues."

Sarah I

Verified

Calming Cleanse, B Quenched, Zinc Shade, Ultimate A

"I have sensitive, dry, rosacea skin but also prone to break outs especially around my chin and lips. Generally most skin care makes my skin flare up, resulting in redness and sensitivity.
ESK was recommended to me by the make up artist doing my make up for my sister in laws wedding, so I decided to give it a go. I chose the rosacea kit.

One month in and I’m really happy. Whilst I still have a minor breakout around my chin, the redness on my cheeks and break outs around my lips have disappeared. The tone of my skin has dramatically improved, to the point where I’ve had so many comments on how much better my skin looks. I feel that I could use a little extra hydration, but have not had the usual flakiness."

Virginia J

Verified

Hydroxy Cleanser, C Serum Lite, Enlighten, Zinc Shade, Smooth Serum, Ultimate A

"I’ve been using the pigmented skin kit for a month and have noticed that my skin is now smooth and soft, whereas before it was rough and patchy. Areas of pigmentation are lighter and less apparent. I’ve found the product to be pleasant to use and I love the smell of the cleanser. My travel kit is also lasting a lot longer than I expected!"

Renee M

Verified

Hydroxy Cleanser, C Serum Lite, Enlighten, Zinc Shade, Smooth Serum, Ultimate A

"I have been using E.S.K now for 4 months and the difference I have seen and felt is beyond amazing. Being from the health care industry myself I know the importance of evidence based and scientifically tested products. I have searched for years to find a skin care range that is both gentle and safe but also effective, my skin has never been clearer. My pigmentation and skin tone are now even and I feel like I have a healthy glow. I am now happy to go without makeup and I can’t recommend E.S.K products more highly. Thank you."

Jacinta S

Verified

Hydroxy Cleanser, C Serum Lite, Enlighten, Zinc Shade, Smooth Serum

"I’ve struggle with pigmentation problems since my pregnancy and maybe age...so I started using esk skincare and I am already noticing a huge change in my skin (the very first photo I took was so bad that I didn’t even post it and I actually wanted to cry) they have been so great with helping me and I highly recommend their products!"

Paula E

Verified

Calming Cleanse, Enlighten, Zinc Shade, Smooth Serum, Ultimate A

"I’m very impressed with my new skincare regime.ESK recommended a skincare pack for me after I answered a few questions. 1 week after receiving my skincare I had a friendly phone call to make sure l was happy with everything. I have skin pigmentation and feel that my skin now has more of an even tone and a healthy glow. My skin feels soft and smooth. There are more days now l can go without makeup. Thankyou for your recommendation."

Renee M

Verified

B Calm, Ultimate A+, Zinc Shade, Calming Cleanse, Enlighten

I have been a client of yours for many years now… Last year I strayed off ESK and tried another product - I wasn’t happy with it and I’m back! I was originally using the normal kit with some lightening cream. After having new skin outbreaks and not sure where to go I contacted ESK who provided me with a personalized consultant Casey who talked through my current regime and how my skin was feeling. She gave me brilliant advice and we tried a new regime which has been a miracle. My skin is now glowing again and the breakouts have near disappeared. It was great as Casey checked in on me on a weekly basis just to see how it was all going. Can not recommend ESK higher!! Thankyou

Nadine Bidner

Verified

Calming Cleanse, C Forte, Zinc Shade, Smooth Serum, Ultimate A

"My name is Nadine and I'm 64 years old. I did all the wrong things when I was younger and my skin has been damaged by the sun over the years. I've been using the E.S.K anti aging products for a month now and have already noticed a difference in how my skin looks. My skin tone has improved, wrinkles around my eyes and upper lip seem reduced and the overall feel of my skin is softer. I love the products and one pump of each product is enough for great coverage. I would definitely recommend E.S.K to others. I'm really happy with the results so far. Thank you E.S.K"

Deidre Mackechnie

Verified

Calming Cleanse, C Serum Lite, Enlighten, Zinc Shade, Smooth Serum, Ultimate A+, Hydroxy Overnight Mask

"Absolutely love the effect of ESK on my skin. I have mature but blemish prone skin with some redness. I have been using ESK for just over a month. My skin is now feeling much more hydrated and there are no breakouts at all. The redness is reduced and I find I am using less makeup. Love it!!"

Anika S

Verified

Spotless: Microneedle Patches

Really enjoyed these acne microneedle patches! I always have random breakouts so I will definitely will be carrying these around for those emergency breakouts...