Last reviewed and verified: June 2026
Shaklee YOUTH Moisture Activating Serum Australia: 212% hydration increase in one application — 10x HA blend, cactus extract, 8-hour moisture
The wellness verdict
The YOUTH Moisture Activating Serum is clinically proven to deliver a 212% increase in skin hydration in a single application, maintained for 8 hours. Powered by Active Cellular Hydration Technology, a 10x hyaluronic acid blend (ten molecular weights targeting every skin depth simultaneously) and cactus extract for sustained moisture retention. Fast-absorbing gel. Apply AM and PM after toner. EWG Verified. Vegan. 100% money-back guarantee.
Clinically proven 212% hydration increase in one application — maintained 8 hours
In Shaklee clinical testing, skin hydration was measured before and after a single application of the Moisture Activating Serum using biometric skin measurement instruments. A single application produced a 212% increase in measured skin hydration — not an estimated cosmetic improvement, a measured biometric result. That result was sustained for 8 hours, making it suitable for both AM and PM application without re-application through the day.
10x hyaluronic acid blend — all molecular weights, all skin depths, one application
Hyaluronic acid is a polysaccharide that holds up to 1,000x its weight in water. Different molecular weights of HA penetrate to different skin depths: high molecular weight HA fills the surface layers immediately; mid-weight HA reaches the mid-dermis; low molecular weight HA penetrates to the deep dermis. Using ten different weights simultaneously means every layer of the skin is hydrated in a single application — not just the surface.
Cactus extract • Active Cellular Hydration Technology • Fast-absorbing gel • EWG Verified
Cactus (nopal/Opuntia) survives extreme arid conditions by storing water in its cells using specialised polysaccharides. These same polysaccharides in the serum attract and retain moisture in the skin environment for extended periods — contributing to the 8-hour sustained result. Active Cellular Hydration Technology coordinates the delivery system across all actives. Fast-absorbing gel texture absorbs in seconds. EWG Verified.
Free postage over $200 · Shipped from Sydney
“I really love this but it seems pretty pricey. I’m 65 and my skin is very dry. On days my skin is feeling dry I will use the serum once that day. As said prior, I really do love this product.”
— Roxanne T C.
“Love the Youth Activating Serum because it does make me look more youthful. I ran into an old acquaintance recently who asked ‘why do we all get older and you look younger?’ This stuff really, really works, and because it’s Shaklee I know there aren’t any nasty ingredients that might affect my health.”
— Beverly P.
“I use this under my BB cream when applying makeup. Otherwise I rely on the Age Defiant Mineral Moisturiser SPF 30. I use this almost every day. I love all of our Shaklee products!!!”
— Marilyn G.
The difference between dry skin and dehydrated skin
Dry skin lacks oil. Dehydrated skin lacks water — and it can affect any skin type, including oily skin. Most moisturisers address the surface only; without a carrier that drives hydration deeper, the dermis remains water-depleted and skin looks dull, crepey and less plump regardless of how much product is applied.
The YOUTH Moisture Activating Serum delivers low-molecular-weight hyaluronic acid and a hydration complex designed to reach beyond the surface for lasting, visible plumpness.
Why skin hydration is a structural anti-ageing mechanism — not just comfort
Dehydrated skin looks and ages differently from well-hydrated skin in ways that go beyond simple comfort or texture. Skin hydration has three distinct structural functions: it maintains the physical height of skin cells in the stratum corneum (dehydrated cells flatten, which directly reduces skin volume and contributes to a “sunken” appearance); it keeps the skin’s natural enzymatic exfoliation processes functioning correctly (dehydrated skin retains dead cell layers that dull the complexion and block product absorption); and it supports collagen and elastin fibres, which require aqueous environment to maintain their three-dimensional structure.
Most moisturisers address only the surface layer of the skin. Occlusive moisturisers form a film on the surface that slows water evaporation. Basic humectants attract water to the top layers. But neither reaches the mid or deep dermis where collagen and elastin fibres live. The 10x HA blend in the Moisture Activating Serum is specifically designed to address all depths: the range of molecular weights means every layer from surface to deep dermis receives hyaluronic acid simultaneously, creating a complete moisture matrix rather than surface-only hydration.
The 212% hydration increase in a single application is the clinical expression of this multi-depth approach. A single-weight HA product physically cannot achieve this result because it only addresses one depth. The sustained 8-hour duration is the contribution of cactus extract and Active Cellular Hydration Technology — which anchor the moisture at each depth rather than allowing rapid diffusion back through the skin surface.
Clinical Performance
- 212% increase in skin hydration from a single application
- Hydration maintained for 8 hours after application
- 10x HA blend targets all skin depths simultaneously
- Cactus extract extends moisture retention duration
From Shaklee clinical testing of the YOUTH Moisture Activating Serum. Same formula available in Australia.
Key actives (official)
| Active | Function |
|---|---|
| 10x Hyaluronic Acid Blend | Ten molecular weights of HA; each penetrates a different skin depth; creates a complete hydration matrix from surface to deep dermis in one application |
| Cactus extract (Opuntia / Nopal) | Specialised polysaccharides that attract and retain moisture; contributes to the 8-hour sustained hydration result; clinically validated water-retention mechanism from desert-survival adaptation |
| Active Cellular Hydration Technology | Proprietary delivery system that coordinates the multi-depth penetration of the HA blend and cactus extract; drives actives to all skin layers for the 212% biometric hydration increase |
How to use: step 3 in the YOUTH routine, AM and PM
After Toner, before Moisturiser — AM and PM
Apply 2–3 pumps of the Moisture Activating Serum after the YOUTH Toner (33510) has absorbed. The toned, exfoliated skin surface maximises HA penetration. Apply morning and evening for continuous deep hydration.
Press into skin — don’t rub
Press the gel into the skin using flat palms and fingertips rather than rubbing. The fast-absorbing gel formula disappears within 30 seconds. Pressing preserves the 10x HA concentration gradient that drives multi-depth penetration.
Follow with Day Cream or Night Cream to seal the moisture
Apply the YOUTH Moisture Lock Day Cream (33508) in the morning or Night Cream (33512/33513) in the evening over the Moisture Serum. The moisturiser seals the HA hydration into the skin and prevents trans-epidermal loss of the moisture delivered by the serum.
Frequently asked questions — Shaklee YOUTH Moisture Activating Serum Australia
What is the YOUTH Moisture Activating Serum?
What does 212% hydration increase mean?
What is Active Cellular Hydration Technology?
What is the 10x HA blend?
What does cactus extract add?
Is it EWG Verified and vegan?
Guarantee?
Pricing & Perks
Retail price: $173.05 | Member price: $147.10. (Save $25.95) All prices in AUD. GST inclusive.
Save 15% every order — free lifetime membership with first order $50+.
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The Shaklee Difference
Safe · Proven · Guaranteed
A Heritage Company — 70 Years Pioneering Clean, Clinically Proven Wellness.
Heritage & achievements
- ✓Founder Dr Shaklee invented the US Multivitamin
- ✓120+ Clinical Studies
- ✓80+ Patents
- ✓$500M in Research & Development
- ✓Trusted by Elite Athletes | Powered 150+ Olympic Gold Medals.
- ✓Exclusive access to Modere & Liquid BioCell® Collagen Peptides
Safety & quality
- ✓EWG-Verified skincare
- ✓Clean, non-toxic formulas (2,500+ ingredients left out)
- ✓No Animal Testing. Vegan options.
- ✓100,000+ quality tests annually
- ✓Beyond Organic Promise
- ✓No-GMO Promise
Our products are Clinically proven · Science-backed · High performing to give you real results — skincare that erases a decade of ageing, and nutrition that helps you look, live and feel younger, longer.
Officially a Shaklee Ambassador, partnered with Shaklee Australia, I’m honoured to be here for you on your wellness journey. Proudly serving my customers for over 20+ years. I’m passionate about holistic, healthy living, Biohacking & Longevity. Helping my community Live Age-Free!
Shipped with care from Sydney
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