Melatonin

Melatonin is a natural neurohormone and a potent, pleiotropic molecule. When used topically, it acts as a highly effective broad-spectrum antioxidant and a powerful cellular repair agent. It boosts the skin’s endogenous antioxidant defense systems and helps repair damage accumulated during the day (especially from UV and pollution), supporting the skin’s natural circadian rhythm for optimal night-time rejuvenation and anti-aging benefits.

INCI Name

Melatonin

CAS No.

73-31-4

Source

Synthetic or Plant Extract (e.g., rice, oats, banana)

Appearance

White to off-white crystalline powder

Core Function

Antioxidant, Anti-aging, DNA Repair, Circadian Rhythm Support, UV Damage Mitigation.

1. Product Overview & Market Relevance

Melatonin’s function in regulating the sleep-wake cycle is well known, but its skin benefits are increasingly recognized. It is a highly effective free radical scavenger and a superior skin penetration enhancer. Its positioning in the market is strongly focused on night repair, chronocosmetics, and anti-photoaging, targeting consumers seeking maximal cellular defense and restoration during sleep, when the skin’s repair processes are naturally optimized.

2. Technical Highlights and Critical Parameters

2.1 Mechanism of Action

  • Direct Antioxidant: Directly neutralizes various free radicals, including those that damage lipids and proteins.

  • Indirect Antioxidant/Booster: Stimulates the production of key endogenous antioxidant enzymes, such as superoxide dismutase (SOD) and glutathione peroxidase (GSHPx), magnifying the skin’s natural defense capacity.

  • DNA Protection: Offers significant protection to cellular and mitochondrial DNA from damage caused by UV and environmental stress.

  • Circadian Signaling: Interacts with melatonin receptors on skin cells to help synchronize and optimize natural repair and proliferative cycles during the night.

2.2 Standard Technical Specifications

ParameterSpecification (High Purity Grade)
Purity≥98%
Molecular Weight232.28 g/mol
Recommended Dosage0.5%-2.0%
SolubilityPoorly water soluble; Soluble in alcohol and organic solvents
StabilityRelatively stable, but sensitive to light and high heat
StorageCool, dark, sealed container, protected from light

3. Market Positioning and Core Advantages

  • Night-Time Specialization: Perfectly suited for premium night serums and treatments, aligning with the chronobiology of skin repair.

  • Comprehensive Protection: Provides exceptional protection by being both a direct scavenger and a booster of the skin’s own defense enzymes.

  • Cellular Depth: Its small, lipophilic structure allows for easy penetration through the stratum corneum and into the mitochondria, delivering antioxidant action where damage originates.

  • High Research Interest: Backed by a growing body of scientific literature supporting its role in topical photoprotection and anti-aging.

4. Formulation Guidelines

  • Integration Phase: Melatonin is poorly water soluble. It must be pre-dissolved in a suitable organic solvent (e.g., ethanol, propylene glycol) or the oil phase before integration into the main formula.

  • Concentration: Effective cosmetic concentrations range from 0.5% to 2.0%. It is generally used in lipid-based or emulsion systems.

  • Stability Management: Add during the cooling phase (below 40°C) to prevent thermal degradation. The final product should be formulated to an appropriate pH (typically 4.0-7.0) and protected from light.

  • Aesthetics: It forms a clear solution once properly dissolved, allowing for aesthetically pleasing final products.

5. Quality Assurance and Regulatory Confidence

Our quality and safety credentials include:

  • COSMOS (Natural and Organic Cosmetic Standard)

  • ISO 9001 Quality Management System

  • ISO 22000 Food Safety Management System

  • HALAL Certification

  • IQNET (The International Certification Network)

  • Technical Dossier (Certificate of Analysis – COA, Technical Data Sheet – TDS, Material Safety Data Sheet – MSDS)

6. Typical Applications

  • Night Repair Serums: Concentrated treatments focusing on cellular regeneration and defense boost during sleep.

  • Anti-Photoaging Products: Used to mitigate accumulated damage from daytime UV and blue light exposure.

  • Chronocosmetics: Formulations explicitly designed to work with the skin’s natural 24-hour cycle.

  • Intensive Antioxidant Creams: Products for mature or heavily stressed skin.

7. Scientific Evidence Summary

  • Antioxidant Superiority: Research indicates that Melatonin is a more effective free radical scavenger than Vitamin E, offering a higher protective capacity in some cellular models.

  • DNA Repair Enhancement: Studies confirm its role in promoting DNA repair mechanisms in skin cells exposed to ultraviolet radiation.

  • Circadian Regulation: In-vitro data demonstrates its ability to modulate key enzymes and gene expression linked to the skin’s day/night biological clock.

8. Frequently Asked Questions

Q1: Does topical Melatonin cause drowsiness?

A: No. Topical cosmetic use of Melatonin targets the receptors in the skin and hair follicle cells. The amount absorbed systemically is negligible and does not affect the central nervous system or cause drowsiness.

Q2: Why is Melatonin primarily used in night creams?

A: Melatonin is used at night because its actions—DNA repair, cellular cleanup, and boosting endogenous antioxidants—are most effective when synchronized with the skin’s natural nocturnal repair and regeneration processes.

Q3: Does Melatonin offer sun protection during the day?

A: While Melatonin is a potent antioxidant that can mitigate the damage caused by UV exposure, it is not a sunscreen and does not replace the need for an SPF filter. It is best used at night to repair the damage accumulated during the day.

 

Source our ≥98% Purity Melatonin for stable, high-efficacy night-time repair, broad-spectrum antioxidant defense, and advanced chronocosmetic formulations.

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Shaanxi Huatai Bio-Fine Chemicals Co., Ltd. is a specialized manufacturer of advanced Functional Skincare Ingredients, providing scalable wholesale solutions for global beauty brands. We offer high-purity bulk supplies of Glabridin (brightening), Licochalcone A (anti-acne), Totarol, and Dipotassium Glycyrrhizinate. With tailored concentrations (1%–99%) and comprehensive OEM capabilities, our ISO 9001/22000 and COSMOS certified facilities guarantee premium cosmetic-grade quality for every wholesale order.

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