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Intense hydration
Skin around the eyes intensely moisturized; skin tone and texture improved.
THE SCIENCE
What is 4D Hyaluronic Acid? The science behind RegenSkin
RegenSkin isn't built on trends — it's built on science. At the heart of every formula is our 4D Hyaluronic Acid complex, backed by more than two decades of regenerative research from RegenLab. Here's how it works, why molecular weight matters, and what makes RegenSkin different from the hundreds of hyaluronic acid products on the shelf.
What is hyaluronic acid, and why does your skin need it?
Hyaluronic acid (HA) is a molecule your body produces naturally. Its job is simple but vital: it holds water. A single gram of hyaluronic acid can bind up to six litres of water, which is why it’s so central to plump, hydrated, healthy-looking skin. The problem is that our natural HA levels decline with age, and environmental stress accelerates the loss. As HA drops, skin can look drier, less firm and more prone to fine lines. Applying hyaluronic acid topically helps replenish that moisture — but as you’ll see, not all hyaluronic acid is created equal, and how it’s formulated makes all the difference.
Why molecular weight changes everything: the 4D approach
Most skincare uses a single molecular weight of hyaluronic acid. High-molecular-weight HA is large, so it stays near the surface — great for an instant smoothing, film-forming effect, but it doesn’t travel far. Low-molecular-weight HA is small enough to reach deeper layers, where it plumps from within. Use only one, and you only get one part of the picture.
RegenSkin’s 4D Hyaluronic Acid combines four molecular weights in a single complex. The result is hydration delivered across multiple layers of the skin at once — surface smoothing and deeper plumping working together. This layered approach is also why the hydration lasts longer: it’s not just a momentary surface boost, but sustained moisture throughout the day. That’s the difference between a quick fix and skincare that genuinely supports your skin over time.
Surface hydration
Higher-weight HA smooths and forms a moisture-locking film on the skin's surface.
Deep hydration
Lower-weight HA reaches deeper layers to plump and cushion from within.
Lasting effect
Four weights working together help skin hold onto moisture far longer than single-weight HA.
Backed by RegenLab: 23 years of regenerative science
What truly sets RegenSkin apart isn’t just a formula — it’s a lineage. RegenSkin is the consumer skincare line of the RegenLab ecosystem. Founded in 2003, Regen Lab is a Swiss pioneer in regenerative medicine, best known for its platelet-rich plasma (PRP) and hyaluronic acid technologies used by clinicians around the world. From its GMP-certified facility near Lausanne, Switzerland, with a team of over 50 in-house scientists and a presence in more than 90 countries, RegenLab has spent over two decades studying how to help the body regenerate and repair.
RegenSkin takes that same scientific foundation and translates it into skincare you can use at home — the rigour of the clinic, made simple for your everyday routine.
The active ingredients behind the results
4D Hyaluronic Acid is the foundation, but it works alongside a focused set of actives, each chosen for a specific role in hydration, firmness and skin renewal.
RegenSkin’s 4D Hyaluronic Acid combines four molecular weights in a single complex. The result is hydration delivered across multiple layers of the skin at once — surface smoothing and deeper plumping working together. This layered approach is also why the hydration lasts longer: it’s not just a momentary surface boost, but sustained moisture throughout the day. That’s the difference between a quick fix and skincare that genuinely supports your skin over time.
Peptides :
Short chains of amino acids that act as messengers in the skin, supporting repair and improving the look of wrinkles, sagging and loss of firmness over time.
GABA :
Helps relax the tiny muscle contractions behind expression lines, softening their appearance — a gentle, topical approach to smoothing dynamic wrinkles.
Mushroom :
Armillaria Matsutake extract :
A mushroom extract long valued in skincare for its antioxidant and anti-aging support.
Coffee seed :
Coffee seed extract : Rich in antioxidants; helps protect skin from environmental stressors while improving its look and feel.
Rice ferment :
Saccharomyces (rice) ferment : Helps restore moisture, calm irritation, improve absorption and refine skin texture — gentle enough for sensitive skin.
Clinically Proven
Clinically studied,
Clinically studied,
visibly effective
Science only matters if it shows up on your skin. In a clinical study, women using the range at home once or twice daily for 30 days reported clear, measurable improvements around the delicate eye area.
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Firmer, plumper
Eye contour plumped and regenerated; skin firm and elastic.
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Fewer fine lines
Visible reduction in the appearance of wrinkles and fine lines around the eyes.
*Clinical studies done on 33 subjects between the ages of 40–64 with wrinkles around the eyes. Repeated applications under normal conditions of use at home, once or twice a day for 30 consecutive days. Individual results may vary.
From the clinic to your routine — including after treatments
Because RegenSkin shares its scientific roots with a regenerative medicine pioneer, it’s a natural fit not just for daily care, but for the sensitive period after professional skin treatments. The same gentle, deeply hydrating, fragrance-free formulas that work in your everyday routine are also well suited to supporting skin as it recovers from microneedling, laser, peels and PRP facials. It’s skincare designed to be effective and kind to your skin at the same time — grounded in real science, simple enough to use every day. Always follow your practitioner’s specific aftercare guidance.
Good to know
Frequently asked questions about 4D Hyaluronic Acid
Everything you need to know before bringing regenerative science into your routine.
Still have a question? Ask our team →Regular hyaluronic acid usually uses a single molecular weight, working mainly at the surface. 4D Hyaluronic Acid combines four molecular weights to hydrate across multiple skin layers at once — for deeper, longer-lasting results.
Our formulas are fragrance-free, dermatologist-tested and designed for daily use across most skin types. As with any new product, patch-test first if your skin is reactive.
Many people use our serum and face cream to support hydration after treatments like microneedling. Always follow your practitioner's aftercare instructions first.
RegenLab is a Swiss regenerative medicine company founded in 2003, known for its PRP and hyaluronic acid technologies used by clinicians worldwide. RegenSkin is its consumer skincare line.
The everyday ritual
Science you can use every day
Ready to bring 23 years of regenerative science into your routine?
Shop the 4D Hyaluronic Acid range