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Secret Weapon Hyaluronic Kakadu Serum
Secret Weapon Hyaluronic Kakadu Serum

Secret Weapon Hyaluronic Kakadu Serum


We are proud to launch the Hyaluronic Kakadu serum which has outstanding multifunctional active ingredients for youthful, radiant skin and induces outstanding results on the skin. Transforming the appearance of dull, tired and de-hydrated skin.

Anti-ageing - Moisturising - Pro-Collagen

The results on the appearance of wrinkles and skin radiance are backed up by clinical trials- 

  • Includes multi-weighted forms of Hyaluronic Acid
  • Extracted from the Australian Kakadu plum, the world’s highest source of vitamin C

Two results driven ingredients brought together to Illuminate your skin, Protect and Reinforce the dermis for a beautiful skin aspect.  Extracted from Kakadu plum, the world’s highest source of vitamin C together with a Hyaluronic Acid with a mixed molecular weight of low, medium and high molecules which will improves skin radiance & boosts skin luminosity.

Kakadu Plum ingredient has been clinically proven to after 1 month:

  • Reduce wrinkle volume by 41%
  • Reduce wrinkle length by 39%
  • Boosts skin tone and evenness by 14%
  • Reduces skin redness by 2.2%
  • Boosts skin brightness by 1.7%


  • Increases Antioxidant activity by 79%
  • Boosts New Collagen Synthesis by 144%
  • Stimulates VitC by 106%


  • Skin radiance enhancement after 15 days +21%
  • Skin radiance enhancement after 30 days +30%
  • 100% of the subjects demonstrated a positive effect.

If you want a high performing product that Induces skin brightening, reduces wrinkles and skin luminosity this product is for you. 

How to apply

3 drops each morning to a cleansed face, neck and décolletage.  YOUR FACE MUST BE DAMP/WET.  Follow with your preferred Secret Weapon Serum to seal the hydration of the Hyaluronic Serum.


100 X more in vitamin C content - Australian Super fruit extracted from the world’s richest source of vitamin C.  Extracted from the Australian Kakadu plum, the world’s highest source of vitamin C.  Protects and reinforces the dermis to reduce the appearance of ageing signs.

Skin benefits 

Energizes dull looking skin - Improves the skin radiance & luminosity 
Induces skin brightening, reduces the appearance of skin redness and improves overall skin tone evenness. Reduces the appearance of wrinkles.

Cocktail of antioxidants to help reduce skin damage induced by oxidative stress.

Visible wrinkle reduction and skin luminosity booster.

This cocktail of antioxidants will help reduce skin damage induced by oxidative stress, stimulates the expression of SVCT-I, the vitamin C transporter of the skin and boost collagen production.

Gloss value is a parameter of the skin radiance. It defines the ability of the skin to reflect the light and is directly linked to the skin surface quality.

Boosts Collagen production

Kakadu has the same if not better antioxidant activity after 30 minutes and 24hours than      vitamin C 
-Stimulates Hyaluronic Acid Synthesis 
-Stimulates Pro-Collagen I synthesis 
-Increases skin radiance and gloss by 10% after 10 days and 17% after 30 days. improves skin surface quality and therefore increases it's luminosity 
-Skin is smoother/texture is reduced by 5% after 15 days and 11% after 30 days  

  • 2 groups of 20 women volunteers (A: Mean age of 47, B: mean age of 37).
    • Application of a 2% Kakadu cream or placebo on split-face & split-neck, 2x/day for 30 days.
    •Crow’s feet wrinkle measurement with derma TOP blue and B: Gloss value measurement with spectropolarimeter.


With a mixed molecular weight spectrum of low, medium and high molecular weight the ingredient will achieve the following results -

  • Better permeation than low and high HA used separately
  • Enhances permeability of water soluble actives
  • Enhances permeability of oil/lipo soluble actives - great to apply before Secret Weapon Serum
  • Enhances hydration and moisturisation- hydration is maintained after 2 hours and therefore a fantastic moisturiser
  • Protects against short term dehydration
  • Increases skin elasticity
  • Increases skin smoothness
  • Short term reduction in wrinkles by approx 7% at 30 minutes and 3% at 4 hours
  • Decrease in wrinkle volume

Why is Kakadu Plum extract is great for Acne ?

Vitamin C Clears Skin Redness

One of the most observable effects of using a product with Vitamin C when dealing with acne is its ability to reduce skin inflammation and redness.   It also strengthens the tiniest of blood vessels - the capillaries. Capillaries are almost microscopic but crucial. They are in charge of bringing precious nutrients and oxygen to even the deepest levels of skin.  It is these basal layers of skin cells that cause most of the redness on our face.  Vit C makes the walls of the blood vessels stronger and reduces the instances of micro-bleeding, thereby making your skin look less red and inflamed.

The production of collagen and elastin which are the two building blocks of skin cells depends on the amounts of Vitamin C, Vitamin E and an essential amino acid known as L-Lysine in the body.

If we don't have the necessary amounts, collagen production can reduce, making skin more vulnerable to damage and more difficult to heal.

Cystic Acne is one of the most severe types of Acne and it carves deep pockets of pus in the lower layers of the skin, damaging tissues and causing scarring as it goes. Your doctor and dermatologist will prescribe you strong antibiotics because of its effects on our skin.  Vitamin C is often recommended for cystic acne too because it boosts the immune system, reduces inflammation and redness, enhances collagen end elastin production, helping the skin repair itself as efficiently as possible.

It is so important to absorb VitC via a healthy diet and also can be supported by topical VitC skin products like the Kakadu Plum ingredient within our serum.


Customer Reviews

Based on 5 reviews
Christmas Gift to myself!

I already have the Secret Weapon serum but splurged on the Hyaluronic Kakadu and Cleansing Balm for Christmas for myself. I was told a couple of days ago that I look like I am 55 years old. That was a huge compliment as I will be 62 in May. I have been battling breast cancer since March 2018 and recently finished chemo therapy. All of Kate's products feel so good on my skin. Another lady told me recently that she couldn't believe I've been through chemo as I have no wrinkles. Kate McIver is my secret weapon!

Silky skin in a bottle

I have been a committed user of the original Kate Mciver serum for nearly 2 years, and after convincing my husband to buy me a set for Christmas I met The lovely Kathryn at the Liverpool store to pick up. Kathryn told me all about this amazing hyaluronic serum and showed me how it works, the clinical studies and results, obviously I then purchased this a few weeks later, and love this as part of my routine. It works so well with the original serum my skin is so much more even and hydrated, can’t wait to see the longer term effects as only been using a few weeks and is already a fixed favourite xx


I've been using the original Secret Weapon serum, Hyaluronic Kakadu serum, Cleansing balm and device and every single one of them are absolutely incredible. These products ACTUALLY work! I've been getting so many compliments about my skin lately and that is 100% down to using these products. I couldn't recommend them more! Thank you Kate Mclver


What can i say about the new Hyaluronic Kakadu Serum because i don’t think there are enough words to describe this beautiful and amazing product, it melts into the skin and is the perfect partner to both the Original and Limited Edition serums. The only skincare i use now is Kates although i have a mature skin I’m getting loads of compliments I’ve never had before, this is holy grail stuff girls!

Awesome - My Wife Loved It

Wide was over the moon to get this after hinting heavily for 6 weeks, she's already got some other stuff and has been really happy with it.

I also found it nice to be buying something described as a 'Secret Weapon'.

Smiles all round. Nice one.

Process worked well too, ordering delivery as described. I couldn't tell you if it is good value for money but defo cheaper than other secret weapons.

Secret Weapon Hyaluronic Kakadu Serum

Secret Weapon Hyaluronic Kakadu Serum

★ Reviews

Let customers speak for us

1044 reviews
Serum has changed my skin completely!

The secret weapon serum has been so amazing for my skin, I’ve used it in my daily routine since August when I was struggling to get rid of my spots,
I had at least 9 spots on my forehead alone and it was really getting me down, I was unable to wear makeup without my skin reacting to it. Since using the serum I am thrilled to say that I have NO SPOTS whatsoever and now only get one or two on occasion, this is something that I have hoped for such a long time but didn’t think it was possible, I can’t thank Kate mciver enough, this serum also helps with spot scars and I would love to invest in some more of their new products. Thank you so much x

Miracle balm!

Ive only been using the cleansing balm and serum for 2 days but im seriously impressed!! When i first came across the product and saw the before and after pics i have to say i was sceptical surely the results couldn’t be this good! But after just 2 days of using morning and night i can already see a huge improvement! I suffer with permanent redness and an uneven skin tone and constant breakouts but the redness has gone right down and my spots are clearing. Ive used loads of different “sensitive” cleansers in the past but all have irritated my skin and made it redder than ever! I even found clinique to sting after use but this makes my skin feel instantly soft and smooth! And no stinging!!! I’ll definitely recommend this to everyone i know and continue to use!

Like a filter in a bottle

I am one of those people that struggle to commit to a Netflix account let alone a beauty product, I’m always so drawn into the lasted product and pages on insta that my makeup drawers end up full of lotions and potions promising to give you the best results, I’ve always had good skin until recently I’ve had some kind of stress triggered condition that would lead to flare ups , Ive been back and forth to the drs with little help, I don’t thing they saw it as a big deal because compared to some cases it wasn’t but I’ve always been known for my skin im a hairstylist and I’d say nearly every client that sits in my chair would always ask my about my skin , so as of late this has been huge to me it got me so so down, I’d wake up in the middle of the night checking if it had got any better or worse which then led me to google to look for help and I’d be ordering this that and the other hoping it would help me but nothing did all it ended up doing was stressing me and worrying me even more which again led to agressive flare ups , I was so so close to giving up then I came across Kate mciver skin on Instagram I was stunned by the reviews and photos that I thought right this is the last thing I’m trying, I ordered it a day before Christmas Eve and to my amazement it arrived the following day,
So after cleansing I put it on and was impressed by how little you need it was like silk and had no chemical smell to it (like most in my drawer) over there next few days I saw a great refuge in the redness I was already feeling better so I made a commitment to myself to get into a routine with it and by god the difference is amazing and I’m so glad I gave it a try my skin is back to what it was but most importantly so am I.
This product will now always be my go too and I’ve had a clear out of everything else that I’ve gathered up in the beauty cubored, I can’t wait to try other products from this range Thankyou so much for the magic in the bottle

Amazing cleansing balm truely inlove

I’m so in love with the secretWeapon Cleansing balm. It smells amazing the scent is very calming. It’s just what my skin needs it leaves it hydrated cleansed glowing smooth and fresh all in one.Its also is great as a mask and removes all makeup. Thank you KateMciverskin for another amazing product💓x

Amazing serum!!

I’ve used this serum before and stopped using it to see how my skin would react. My spots returned so I began using the serum again. I’ve been using it for 2/3 weeks now and my skin has never felt better!! My spots have pretty much cleared and my face has never felt this smooth. Definitely recommend this serum if you’re after quick results which last a long time!!❤️