NMN (β-Nicotinamide Mononucleotide) — NAD+ Precursor for Cellular Energy and Skin Longevity
β-Nicotinamide Mononucleotide (NMN) is a nucleotide intermediate in the NAD+ salvage pathway that has gained significant traction as a cosmetic active ingredient for anti-aging skincare. As a direct biosynthetic precursor to nicotinamide adenine dinucleotide (NAD+), NMN supports cellular energy metabolism, DNA repair signalling, and sirtuin-mediated gene regulation in skin cells. With purity ≥99% by HPLC and a well-characterised safety profile, NMN is positioned as a next-generation active for formulators targeting chronological and photo-induced skin ageing. TCS NEXUS S.L. supplies cosmetic-grade NMN from our facility in Valencia, Spain, with full EU regulatory documentation.
Technical Specifications
| Parameter | Value |
|---|---|
| INCI Name | Nicotinamide Mononucleotide (NMN) |
| CAS Number | 1094-61-7 |
| Molecular Formula | C₁₁H₁₅N₂O₈P |
| Molecular Weight | 334.22 g/mol |
| Purity (HPLC) | ≥ 99% |
| Appearance | White crystalline powder |
| Solubility | Freely water-soluble |
| Recommended pH | 5.0 – 7.0 |
| Dissolution Temperature | ≤ 45 °C |
| Recommended Use Level | 1.0 – 3.0% |
| Storage | 2 – 8 °C, sealed, protect from light and moisture |
Mechanism of Action: NAD+ Salvage Pathway
NMN enters keratinocytes and dermal fibroblasts via the SLC12A8 transporter and is converted to NAD+ in a single enzymatic step catalysed by nicotinamide mononucleotide adenylyltransferases (NMNAT1-3). This positions NMN one step closer to NAD+ than nicotinamide (niacinamide), which must first be converted to NMN by nicotinamide phosphoribosyltransferase (NAMPT) — the rate-limiting enzyme in the salvage pathway. Because NAMPT activity declines with age, direct NMN supplementation bypasses this bottleneck and restores intracellular NAD+ pools more efficiently than niacinamide alone.
Elevated NAD+ levels activate three key downstream mechanisms relevant to skin biology:
- Sirtuin activation (SIRT1, SIRT3, SIRT6): Sirtuins are NAD+-dependent deacetylases that regulate inflammatory gene expression, mitochondrial biogenesis, and stress resistance in skin cells. SIRT1 suppresses NF-κB-driven inflammation; SIRT6 promotes base-excision DNA repair.
- PARP-mediated DNA repair: Poly(ADP-ribose) polymerases consume NAD+ to repair single-strand DNA breaks caused by UV exposure. Adequate NAD+ reserves ensure PARP enzymes can function at full capacity during UV-recovery periods.
- Mitochondrial electron transport: NAD+ and its reduced form NADH are essential cofactors in complexes I and III of the electron transport chain. Enhanced mitochondrial ATP output improves overall cellular function in aged fibroblasts.
Cosmetic Efficacy and Published Data
In vitro studies on human dermal fibroblasts treated with NMN at 0.5 mM concentration show a 40–60% increase in intracellular NAD+ levels within 24 hours and a corresponding upregulation of collagen type I gene expression (COL1A1). Separate cell-culture work demonstrates that NMN pre-treatment reduces UVB-induced cyclobutane pyrimidine dimer (CPD) persistence by approximately 30%, indicating enhanced nucleotide-excision repair capacity.
In a cosmetic efficacy study with 30 female volunteers (ages 40–55), twice-daily application of a 2% NMN serum over 8 weeks produced statistically significant improvements in skin elasticity (+18% by cutometer), transepidermal water loss (TEWL reduction of 22%), and fine-line depth (−15% by optical profilometry). No adverse reactions were reported. These results position NMN as a complementary active to established NAD+ pathway ingredients such as niacinamide and nicotinamide riboside.
Formulation Guidelines
NMN is a water-soluble crystalline powder that dissolves readily at ambient temperature, though incorporation below 45 °C is recommended to prevent thermal degradation of the phosphodiester bond. Add NMN to the aqueous phase during cool-down in emulsion systems, or dissolve directly in toner and serum vehicles. The effective use level is 1.0 – 3.0% w/w in finished formulations.
Maintain formulation pH between 5.0 and 7.0 for optimal stability. Below pH 4.5, acid-catalysed hydrolysis of the glycosidic bond accelerates. Above pH 7.5, the phosphate group becomes susceptible to base-mediated cleavage. NMN is compatible with standard humectants (glycerin, hyaluronic acid, betaine), non-ionic emulsifiers, and most preservative systems. Avoid strong oxidising agents (hydrogen peroxide, benzoyl peroxide) and divalent metal ions (Cu²⁺, Fe²⁺) that catalyse NAD+-precursor degradation.
For maximum shelf stability, package NMN-containing products in airless pump dispensers with UV-protective packaging. Accelerated stability testing (40 °C / 75% RH, 3 months) shows less than 5% NMN degradation in properly formulated anhydrous or low-water systems. Aqueous serums should target a water activity below 0.85 where possible, or incorporate chelating agents (disodium EDTA, phytic acid) to sequester trace metals.
Stability Considerations
NMN’s primary degradation pathway is hydrolysis of the phosphodiester linkage, yielding nicotinamide and ribose-5-phosphate. Key factors influencing stability:
- Temperature: Store raw material at 2 – 8 °C. Finished formulations are stable at 25 °C for 12+ months when pH is controlled and trace metals are chelated.
- pH: Optimal range 5.0 – 7.0. Avoid extremes. Phosphate buffer systems at pH 6.0 – 6.5 provide the best stabilisation.
- Light: NMN is moderately photosensitive. Use amber or opaque packaging. UV absorbers in the formulation matrix provide additional protection.
- Oxygen: Nitrogen-purged filling and airless packaging reduce oxidative degradation. Antioxidant co-actives (tocopherol, ferulic acid) provide synergistic stabilisation.
Regulatory Context
NMN (CAS 1094-61-7) is permitted for use in cosmetic products in the European Union under Regulation (EC) No 1223/2009. It is not listed in Annexes II–VI (prohibited/restricted substances or UV filters/preservatives/colourants), meaning it may be used without concentration restrictions provided the finished product meets general safety requirements under Article 3. A Cosmetic Product Safety Report (CPSR) is required before placing any NMN-containing product on the EU market.
TCS NEXUS S.L. provides all documentation necessary for CPSR preparation, including full toxicological profiles, certificates of analysis with heavy-metal and microbiological specifications, and REACH compliance confirmation. As an EU-based supplier operating from Valencia, Spain, we ensure full traceability and EU-origin documentation for all shipments.
Supply and Logistics
TCS NEXUS S.L. maintains ready stock of cosmetic-grade NMN (≥99% HPLC) at our Valencia, Spain warehouse. Standard EU delivery is 5 – 7 business days. Each batch ships with a Certificate of Analysis including HPLC purity, mass spectrometry confirmation, residual solvent analysis, heavy-metal panel, and microbiological testing. Sample quantities are available for formulation trials. Contact info@tcspeptides.com for pricing and availability.
Related Products
- Niacinamide (Vitamin B3) — upstream NAD+ precursor, widely used at 2–5% for barrier repair and pigmentation control
- Glutathione — tripeptide antioxidant with synergistic mitochondrial support
- Acetyl Hexapeptide-8 (Argireline) — SNARE-complex inhibitor for expression-line reduction
Further reading: See also: Cosmetic Peptides Technical Guide | Anti-Aging Peptide Comparison
Frequently Asked Questions
How does NMN differ from niacinamide in cosmetic formulations?
Both are NAD+ precursors, but they enter the salvage pathway at different points. Niacinamide must first be converted to NMN by the enzyme NAMPT before it can become NAD+. Since NAMPT activity declines significantly in aged skin, niacinamide conversion becomes less efficient. NMN bypasses NAMPT entirely, requiring only the NMNAT enzymes (which remain stable with age) for direct conversion to NAD+. In practical terms, NMN at 1–3% may provide NAD+-boosting efficacy comparable to or exceeding niacinamide at 3–5%, particularly in formulations targeting mature skin.
Can NMN be combined with retinoids?
Yes. NMN and retinoids act through independent biochemical pathways and are chemically compatible within the pH 5.0 – 7.0 range suitable for both ingredients. There is a theoretical synergy: retinoid-induced increases in cellular turnover demand higher ATP production, and NMN supports this by elevating NAD+ levels for mitochondrial function. Dissolve NMN in the aqueous phase below 45 °C and incorporate retinol or retinaldehyde in the oil phase or in encapsulated form. No incompatibility has been reported in published stability data.
Is NMN stable in water-based formulations?
NMN shows adequate stability in aqueous systems within pH 5.0 – 7.0 when trace metals are chelated and the formulation is protected from light. Accelerated stability data at 40 °C / 75% RH shows less than 5% degradation over 3 months in optimised formulations. For maximum stability, use airless packaging, include a chelating agent (disodium EDTA at 0.05–0.1%), and consider nitrogen-purged filling. Anhydrous systems such as oil serums with suspended NMN offer even greater shelf stability.
What is the recommended concentration of NMN in finished products?
The supplier-recommended use level is 1.0 – 3.0% w/w in finished cosmetic formulations. Efficacy studies showing significant improvements in elasticity and TEWL used 2% NMN. Starting formulation work at 1.5 – 2.0% offers a practical balance of efficacy, stability, and cost. Higher concentrations up to 3% may be used in premium serums without solubility or stability issues at the recommended pH range.
What is the minimum order quantity (MOQ)?
TCS NEXUS S.L. offers NMN with no fixed MOQ for sample and evaluation quantities. Production-scale orders typically start at 1 kg. Contact our Valencia team at info@tcspeptides.com for custom packaging, documentation requirements, or bulk pricing.
Technical Support and Samples
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