L-Glutathione Powder - High-Purity Antioxidant Tripeptide

Brief Introduction

L-Glutathione (Reduced) (CAS 70-18-8), also known as GSH or γ-L-Glutamyl-L-cysteinylglycine, is a naturally occurring tripeptide composed of three amino acids: cysteine, glutamic acid, and glycine. It is present in virtually every cell of the human body and serves as the body‘s primary endogenous antioxidant, playing a critical role in cellular protection, detoxification, and redox balance.

Our L-Glutathione Reduced powder is produced through microbial fermentation and meets ≥98% purity (HPLC). It appears as a white crystalline powder with excellent water solubility (>50 mg/mL).

Key Characteristics

Fermentation-Derived — Produced through microbial fermentation using Torula yeast, Escherichia coli, or Corynebacterium ammoniagenes, ensuring consistent quality and high purity.

High Purity Grade — ≥98% assay verified by HPLC, suitable for dietary supplements and cosmetic formulations.

Water-Soluble Active — Excellent aqueous solubility makes it easy to incorporate into serums, tonics, and powder blends.

Light and Moisture Sensitive — Requires protection from light and moisture during storage; store at -20°C for long-term stability.

The Main Applications for High Purity L-Glutathione Powder?

1) Dietary Supplements
L-Glutathione is a premium ingredient in antioxidant and wellness supplements, positioned for cellular protection and overall wellness support.

Clinical Dosage Reference: 250–500 mg/day

Common Formats: Capsules, tablets, powder blends, effervescent formulations

2) Cosmetics & Personal Care
L-Glutathione is widely used in skin care formulations for its antioxidant properties.

Common Formats: Serums, essences, creams, mask powders

3) Functional Foods & Beverages
L-Glutathione can be incorporated into functional beverages and health drinks. Its water solubility enables clear formulations without turbidity.

Recommended Usage Dosage

Note: Regulatory limits vary by market. Taiwan sets a maximum of 250 mg/day for food ingredient use. The European Food Safety Authority (EFSA) considers up to 300 mg/day safe for adults.

Synergistic Combinations for Cosmetic Use

1. Alpha Arbutin Powder

Tyrosinase inhibition; hydroquinone-free brightening active, compatible in aqueous serum systems

2. Kojic Acid

Melanin synthesis inhibition; complementary brightening mechanism, whitening composition patent

3. Resveratrol

Lipophilic antioxidant; complementary free radical scavenging,compatible in emulsion systems

4. Niacinamide

Synergistic increase in intracellular glutathione levels; supports even skin tone, patent composition and encapsulated formula

5. Glabridin

Tyrosinase inhibition; enhances overall brightening effect, whitening composition patent

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