Sayuri Science · Longevity Axis™
The Longevity Axis™ is a skin-ageing framework developed by biochemist Katerina Trofimova at Sayuri SkinLab in the Netherlands. It describes three connected systems whose decline shapes how the face ages after 40 — the mineral, hormonal and neuro-circulatory axes — and it is the basis for every Sayuri formula and treatment.
By Katerina Trofimova, biochemist and founder of Sayuri · Last updated: November 2026
Most anti-ageing skincare treats the face as a surface: add hydration, add peptides, remove dead cells. Yet two women of the same age, using the same creams, can look ten years apart. In Sayuri’s view the difference lies deeper — in the structure that holds the skin and in the biological systems that keep it supplied, protected and renewed.
The face does need care. But it cannot be worked on in isolation from the neck, posture and core: the way we hold the head, the tension in the neck and the support of the body all shape facial contours over time. This is the foundation of the Sayuri method. On top of that foundation, the Longevity Axis™ explains what happens inside the skin itself.
Three changes run in parallel as we age:
Because these processes influence each other, Sayuri addresses them together rather than one ingredient at a time.
| Axis | What changes with age | Sayuri focus | Sayuri line |
|---|---|---|---|
| Mineral | Weaker barrier, lower hydration, slower renewal, dull texture | Mineral and hydration support, gentle renewal | Glowing Skin |
| Hormonal | Thinner, less dense skin; loss of firmness and definition | Skin density, firmness and matrix support | Matrix Repair |
| Neuro-circulatory | Reactivity, redness, low-grade inflammation, tired-looking skin | Barrier restoration first; calmer skin and better microcirculation follow | HyActive |
The mineral axis describes the skin’s ability to hold water, maintain its barrier and renew its surface — processes that depend on minerals such as magnesium and on the barrier lipids the skin produces.
With age, the skin barrier recovers more slowly after damage, the stratum corneum holds less water and the production of barrier lipids and structural proteins declines (Wang et al., Aging, 2020). Magnesium salts are known to bind water and support barrier repair: in a controlled study, bathing in a magnesium-rich salt solution improved barrier function and hydration and reduced roughness and redness in dry skin (Proksch et al., Int J Dermatol, 2005).
That is why Zechstein BioMineral™ — magnesium from the ancient Zechstein deposits beneath the Netherlands — sits at the heart of Sayuri formulas. The Glowing Skin line combines it with gentle enzymatic and acid renewal and hydration support, for brighter, smoother skin without aggressive peeling.
Key products: Glow Reset Tonic, Glow Perfection Drops™, Glow Reset Cleansing Mask.
The hormonal axis describes how falling oestrogen levels around and after menopause change the structure of the skin: it becomes thinner, drier, less elastic and loses collagen.
Following menopause, many women notice a rapid acceleration of skin ageing; estrogen deficiency is associated with thinner skin, less collagen, reduced elasticity and increased dryness (Thornton, Dermato-Endocrinology, 2013). Studies cited in the dermatological literature report that up to 30% of dermal collagen may be lost in the first five years after menopause (Rzepecki et al., Int J Women’s Dermatol, 2019).
Cosmetics cannot replace hormones, and Sayuri does not claim to. What a well-designed formula can do is support the skin’s matrix — its density, firmness and resilience — while the body changes. The Matrix Repair line is formulated for mature and hormonally changing skin, with plant-derived actives such as hop extract (Humulus lupulus) and peptides that support collagen.
Key products: Matrix Sculpture Drops, Matrix Recode Cream, Matrix EyeLift Concentrate.
The neuro-circulatory axis describes the link between the skin barrier, low-grade inflammation, the skin’s stress responses and microcirculation. In Sayuri’s approach it starts with the barrier: when the barrier is restored, the skin calms down and microcirculation improves as a result.
Ageing skin repairs its barrier more slowly, and a disrupted barrier triggers inflammation. Researchers have proposed that this chronic, low-grade inflammation from the skin contributes to “inflammaging” — age-related inflammation throughout the body (Agrawal, Hu & Bollag, Biology, 2023).
Sayuri does not try to “speed up blood flow” with irritating stimulants. The HyActive line rebuilds the barrier with ceramides, peptides, probiotic ferments and soothing actives, so the skin becomes less reactive and looks more rested and even.
Key products: Hi-Active Barrier Restore Cream, Hi-Active Barrier Reset Cream, Barrier Code Serum, Barrier Reset Eye Comfort.
The Longevity Axis™ was developed by Katerina Trofimova, a biochemist and the founder of Sayuri SkinLab in Amstelveen, the Netherlands. She formulates all Sayuri products herself and is qualified as a cosmetic safety assessor under EU Regulation 1223/2009.
No. It is a cosmetic framework that explains visible skin ageing and guides the choice of skincare and non-invasive treatments. It does not diagnose or treat medical conditions. For hormonal or skin health concerns, consult your doctor.
The changes it describes usually become visible after 40, and the hormonal axis becomes especially relevant around perimenopause and menopause. Supporting the barrier and mineral balance earlier helps the skin stay resilient for longer.
Yes. The three lines are designed to work together. A common routine combines a Glowing Skin product for renewal with HyActive barrier care; women in menopause often add a Matrix Repair serum or cream. Introduce active products gradually and patch-test first.
Zechstein BioMineral™ is Sayuri’s signature magnesium ingredient, sourced from the Zechstein mineral deposits beneath the Netherlands, which formed around 250 million years ago. Magnesium salts are known to bind water and support skin barrier repair.
Katerina Trofimova is a biochemist, cosmetic formulator and the founder of Sayuri SkinLab in the Netherlands. She holds degrees in mining engineering and biotechnology, is qualified as a cosmetic safety assessor under EU Regulation 1223/2009, and has been researching skin ageing for more than fifteen years. A competitive swimmer and athlete since childhood, she approaches the face as part of the whole body. Read more about Katerina.
Sayuri products are cosmetics intended to support the appearance and condition of the skin. They are not medicines and do not treat or prevent disease.
Longevity beauty, developed by biochemist Katerina Trofimova in the Netherlands.
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