Reduced glutathione powder

Buyers must prioritize purity levels of ≥98% as determined by HPLC (High-Performance Liquid Chromatography) testing. Ensure the powder is white or almost white crystalline, with a melting point between 192-195°C. It is critical to verify the heavy metal content (Lead ≤3ppm, Arsenic ≤1ppm) and microbiological limits (Total Plate Count <1000cfu/g) to meet international safety standards.

For food and supplement grades, the supplier should hold ISO 22000 or HACCP certifications. If the product is intended for the US market, FDA registration and GRAS (Generally Recognized as Safe) status are preferred. For pharmaceutical applications, GMP (Good Manufacturing Practice) certification and compliance with USP (United States Pharmacopeia) or EP (European Pharmacopoeia) monographs are essential.

Reduced Glutathione is typically produced via enzymatic synthesis or fermentation. Enzymatic methods often yield higher purity and better stability. Because GSH is highly susceptible to oxidation (turning into GSSG), ensure the supplier uses vacuum-sealed, light-resistant packaging and provides a Stability Study Report to guarantee a shelf life of at least 24 months under proper storage conditions.

In the nutraceutical industry, it is used for its antioxidant and detoxification properties. In the cosmetic sector, it is a key ingredient for skin-whitening and anti-aging formulations due to its tyrosinase-inhibiting effect. Buyers must specify the mesh size (usually 80-100 mesh) to ensure optimal solubility and blending compatibility with other active ingredients.

The primary risk is product degradation during transit due to heat or moisture. Always insist on moisture-proof aluminum foil bags and desiccants. Another risk is customs seizure if the HS Code (typically 2930.90) or documentation (MSDS, COA) is incomplete. Ensure the supplier provides a comprehensive Material Safety Data Sheet (MSDS) for smooth clearance.

Utilize Trade Assurance services provided by platforms like Made-in-China.com to protect your payment until delivery. For quality assurance, hire a third-party inspection agency (like SGS or Intertek) to conduct pre-shipment sampling and testing. Never rely solely on the supplier’s in-house COA for the first three bulk orders.

Negotiate based on volume tiers; prices for 100kg+ orders are typically 15-20% lower than sample rates. For shipping, Air Freight is recommended for high-value powders to minimize environmental exposure, though Sea Freight (LCL) is more economical for large volumes. Ensure the Incoterms (e.g., CIF or DAP) clearly define who handles the import permit requirements in the destination country.