Le Serum
Le Serum
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Description
The Science Behind This Formula
Le Serum is built around Argireline (acetyl hexapeptide-8) at a 10% therapeutic concentration, delivered via a phospholipid carrier system. Argireline modulates catecholamine release at the neuromuscular junction, reducing micro-contractions that cause expression lines — the same pathway targeted by injectable treatments, without the needle. The serum also pairs this with dual molecular weight hyaluronic acid: high MW for immediate surface plumping, low MW for deeper sustained hydration.
Development Timeline
5 years of development — one year for ingredient validation, one year for phospholipid delivery engineering, one year for stability formulation, one year of clinical testing, one year for manufacturing scale-up.
Key Ingredient Breakdown
| Ingredient | Function | Why Concentration Matters |
|---|---|---|
| Argireline (Acetyl Hexapeptide-8) | Modulates neurotransmitter release at the neuromuscular junction, reducing expression line formation | 10% — therapeutic threshold for measurable wrinkle reduction; conventional serums use 1-3% |
| Dual MW Hyaluronic Acid | High MW hydrates surface, low MW penetrates deeper for sustained moisture | Both sizes present simultaneously — uncommon in conventional serums which typically use only high MW |
| Phospholipid Carrier | Biocompatible delivery vehicle that crosses the stratum corneum without triggering immune response | Essential for peptide delivery — Argireline cannot reach its target without an active carrier |
What Makes This Cosmeceutical-Grade
Penetrating base. The formula is engineered with a delivery system designed to carry active ingredients beyond the stratum corneum to the viable epidermis, where living cells respond.
Oregon Tilth certified organic. One of the strictest organic certifications in the United States — achieved at therapeutic active concentrations, which most organic-certified brands cannot maintain.
FDA-registered manufacturing. The facility meets federal standards for drug-licensed production, a higher bar than cosmetic-only manufacturing.
Formulated by PhD scientists. Dr. Volynsky (PhD organic chemistry) and Dr. Libaridian (PhD pharmaceuticals, R.Ph.) with a combined 50+ years of formulation research.
Learn More About Science | About our founders | Doctor's Notes blog
The Full Formulation. No Compromises.
Le Serum took five years because Dr. Volynsky refused to compromise on any single element — the concentration of the active ingredient, the stability of the formula, the organic certification of the base, or the delivery system that carries it to where it needs to act.
Five years is not a slow development cycle. It is the minimum time required when a chemist insists on satisfying every clinical parameter before releasing a product.
The Mechanism
Argireline Concentration Comparison
| Parameter | Conventional Serum | Le Serum (Cosmeceutical) |
|---|---|---|
| Argireline concentration | 1-3% | 10% |
| Cellular response threshold | Below — insufficient for neuromuscular effect | Above — therapeutic modulation achieved |
| Delivery system | Standard base (limited penetration) | Phospholipid carrier (engineered for depth) |
| Hyaluronic Acid | Single MW (surface only) | Dual MW (surface + deep hydration) |
| Primary effect | Temporary surface smoothing | Neuromuscular signal modulation — same mechanism as Botox, without the needle |
| Development time | Months | 5 years |
The difference is not the ingredient. It is how much of it actually reaches the muscle.

Le Serum is built around Argireline (acetyl hexapeptide-8) at a therapeutic concentration, paired with dual molecular weight Hyaluronic Acid and delivered through a highly penetrating base.
Argireline modulates neurotransmitter release at the neuromuscular junction, reducing the micro-contractions that cause expression lines to form and deepen. This is the same nerve-muscle pathway targeted by injectable treatments — without the needle, without the clinic visit.
Dual molecular weight Hyaluronic Acid: high molecular weight HA plumps the skin surface immediately, while low molecular weight HA penetrates deeper for sustained hydration and structural support. Both are present simultaneously, delivering immediate visible effects and cumulative long-term improvement.
Penetrating base: the phospholipid-based delivery system carries Argireline across the stratum corneum to the viable epidermis, where it reaches the neuromuscular junction. Without this vehicle, the peptide would remain on the skin surface and produce no biological effect.
The Development Story
Five years of formulation. Not because the formula was hard to make — because Dr. Volynsky would not release it until every clinical parameter was satisfied. The concentration had to be therapeutic, not decorative. The organic-certified base had to maintain stability alongside the active peptide. The delivery system had to be proven bioavailable. The manufacturing had to scale without compromising batch consistency.
She was asked, more than once, to release a simpler version in less time. She declined each time.
The Price Context
Ultra-luxe prestige skincare luxury brands retails for $385 for 1 oz of its flagship cream. Le Serum is formulated with the same commitment to ingredient quality and clinical development — but without the advertising budget, celebrity endorsements, or luxury packaging mark-up that multiplies the price of heritage beauty brands.
The difference between Le Serum and a $385 product is not the formula. It is the marketing budget.
Usage
Apply twice daily to clean, dry skin. Focus on areas where expression lines form: the forehead, crow's feet area, and between the brows. Allow to absorb fully before applying moisturiser. Results are cumulative — most users notice visible improvement within 4 to 8 weeks of consistent use.
Suitable For
- Fine lines and early-to-moderate expression wrinkles
- Those seeking a non-invasive alternative or complement to injectable treatments
- Sensitive skin that cannot tolerate stronger anti-wrinkle actives
- Maintenance between professional aesthetic treatments
Also Consider
Pluripotencial — the same core Argireline technology in Dr. Volynsky's penetrating base, formulated as a richer cream at a more accessible price point. Same mechanism. Different tier.
Directions
Apply the serum in a circular motion on the face, letting it dry for a few minutes before applying your next skincare product. Repeat this 1-2 times a day. Do note that this should not be used with C-Retinol-C.
Key Ingredients
- Hyaluronic Acid: Helps with moisture retention and skin texture.
- Acetyl Hexapeptide-8: Also known as Argireline, it is a neuropeptide that relaxes the muscles and reduces the appearance of deeper wrinkles.
- Witch Hazel Extract: This is an astringent that possesses anti-inflammatory and antioxidant properties to protect your skin against free radicals, tighten the skin, and reduce inflammation.
All Ingredients
- Purified water
- Glycerin
- Glyceryl
- Polyacrylate
- Acetyl hexaptide-3
- Witch Hazel
- Hyaluronic acid
- Ethoxydiglycol
- Methylisothiazolinone
Suitable for
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FREQUENTLY ASKED QUESTIONS
Does the Le-Serum absorb into the skin well?
Yes, it does! The Le-Serum absorbs into the skin quickly, typically withinseconds. It contains hyaluronic acid, which binds existing water intoyour skin. Because of this, it doesn’t evaporate and will work onboth the skin’s surface and deeper layers for ultimate hydration.
Do I apply the Le-Serum on wet or dry skin?
Apple the Le-Serum on dry skin, after applying your nightly moisturizer.
What is the texture of Le-Serum?
The Le-Serum has a light texture with the similar consistency to very light syrup.
Can I use the Le-Serum with other Nujevi products?
Yes, you can, except for C-Retinol-C.
Does the Le-Serum dry out skin?
No, it does not! It does the opposite – The Le-Serum will relax muscle expression and helps in moisture retention, which keeps your skin hydrated while reducing superficial wrinkles.
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