L-Theanine

L-Theanine is a unique, non-proteinogenic amino acid naturally found almost exclusively in tea leaves (Camellia sinensis). Its primary function is in the nutraceutical sector, where it is highly valued for its ability to promote relaxation without sedation, reduce stress and anxiety, and enhance focus and attention by modulating alpha brain wave activity. This makes it an essential active ingredient for formulations targeting cognitive support, sleep optimization, and mood enhancement, aligning perfectly with the burgeoning stress and wellness market.

INCI Name

Theanine

CAS No.

3081-61-6

Molecular Formula

C₇H₁₄N₂O₃

Molecular Weight

174.2 g/mol

Appearance

White or off-white crystalline powder

Odor

Odorless or slightly characteristic odor

Solubility

Highly soluble in water, soluble in hot ethanol, insoluble in ether

Applicable pH Range

4.0–8.0

Suggested Applications

Functional beverages, capsules, powders, gummies, mood-support supplements

The Cognitive Architect: High-Purity L-Theanine for Neuro-Cosmetic Vitality

In the prestige beauty sector, the next frontier of anti-aging is not just the skin—it is the brain-skin axis. Modern consumers are increasingly aware that chronic stress and mental fatigue are the primary drivers of “cortisol-aging,” leading to inflammation, dullness, and a breakdown of the dermal barrier. Formulators are currently at a disadvantage, relying on legacy topical ingredients while ignoring the root psychological triggers of skin deterioration. Our 99% High-Purity L-Theanine is the definitive bioactive solution for the emerging “Neuro-Cosmetic” category. By bridging the gap between internal wellness and external radiance, this high-purity amino acid provides the clinical-grade support required to harmonize the nervous system, mitigate the skin’s cortisol response, and restore a state of physiological calm that is essential for long-term skin health.

Unrivaled Efficacy: Clinical & Laboratory Proof

  • Alpha-Wave Modulation: Scientifically validated via EEG studies to promote the generation of alpha brain waves—the frequency associated with “wakeful relaxation” and focused creativity—effectively neutralizing the mental agitation that triggers inflammatory cascades in the skin.

  • Neurotransmitter Homeostasis: Acts as a sophisticated regulator of the nervous system by increasing inhibitory Gamma-Aminobutyric Acid (GABA) levels, directly countering the excitatory neurotransmitters that drive skin hyper-reactivity and sensitivity.

  • Cortisol-Induced Degradation Inhibition: By modulating the physiological response to stress, our L-Theanine helps lower systemic stress markers, protecting the extracellular matrix (collagen and elastin) from the catabolic effects of high cortisol levels.

  • Molecular Precision: Produced to a 99%+ purity standard, ensuring the bioactive is free from impurities that compromise sensory profiles, allowing for seamless integration into high-end oral beauty supplements and advanced functional skin treatments.

Core Specifications & Technical Parameters

ParameterSpecification
Active Marker99% Minimum Purity (L-Theanine)
Physical FormFine White Powder
SolubilityHighly water soluble
Taste ProfileNeutral / Slightly sweet & umami
StabilityExcellent stability in powder and solution
Shelf Life24 Months
StorageAirtight container, protected from heat & oxidation

Formulation Intelligence: The “Golden Synergy” Blends

Accelerate your R&D pipeline with these strategically optimized pairings designed to deliver market-leading, “Beauty-from-Within” results:

  • The “Neuro-Radiance” Beauty Supplement: Combine with Magnesium Glycinate and Vitamin C. This triad creates the ultimate “calm-and-brighten” solution; L-Theanine relaxes the central nervous system to minimize stress-induced skin dullness, while Magnesium and Vitamin C promote structural synthesis and energy metabolism.

  • The “Urban-Zen” Protective Complex: Pair with Ashwagandha and Antioxidants (e.g., Resveratrol). This synergy is designed for the high-stress urban consumer; L-Theanine modulates the cortisol response, Ashwagandha provides secondary adaptogenic support, and Resveratrol protects the skin from environmental oxidation.

  • The “Nocturnal Repair” Elixir: Integrate into Sleep-Supporting formulas with Melatonin. By using L-Theanine to create a state of relaxed focus, you facilitate a more seamless transition into deep, restorative sleep—the only time when the skin’s repair mechanisms are operating at peak efficiency.

Quality Assurance & Regulatory Excellence

Our production standards reflect the precision required by global health and beauty brands, ensuring total supply chain confidence:

  • ISO 9001

  • ISO 22000

  • COSMOS

  • HALAL

  • IQNET

Our comprehensive technical dossier—including TDS, MSDS, and COA—is available to support your regulatory and safety assessment requirements.

Secure Your Competitive Edge in Neuro-Cosmetics

True innovation in high-end beauty requires the integration of high-potency, standardized bioactives that address the intersection of mental health and skin vitality. Do not let the “stress-aging” crisis undermine your brand’s performance. Integrate the clinical-grade reliability of our 99% Purity L-Theanine into your next-generation wellness-beauty formulations.

Contact our technical advisory team to secure your professional evaluation samples and gain immediate, priority access to our full library of technical validation reports and stability testing data.

Request your technical dossier and premium-grade, high-purity samples today to initiate the next generation of high-potency, neuro-cosmetic care.

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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