Tetrahydrocurcumin

Product Description

Green Stone Swiss manufactures high-purity Tetrahydrocurcumin under GMP-aligned process controls for professional antioxidant and tone-evening formulas. Each lot is released with batch-consistent assay, full technical documentation, and free sample support. Direct factory supply covers bulk demand for serums, creams, and spot-care systems that cannot accept the yellow color of curcumin.

Tetrahydrocurcumin (CAS 36062-04-1) is the hydrogenated diarylheptanoid derived from curcumin, in which both olefinic double bonds are reduced. The resulting off-white polyphenol is more color-stable in finished products and functions as a cosmetic antioxidant. Published work also supports tyrosinase inhibition and reduced melanogenesis, so formulators use it for dual antioxidant and brightening positioning. It is poorly soluble in water and is typically pre-dissolved in glycols before addition to emulsions.

Brands specifying a colorless curcumin-pathway active use this grade to avoid turmeric staining while keeping a verifiable polyphenol mechanism. GSS supplies bulk quantities with COA and TDS support so procurement and R&D teams can qualify Tetrahydrocurcumin as a distinct INCI from curcumin and pair it with complementary antioxidants in leave-on care.

Product Specification

• INCI Name: Tetrahydrocurcumin
• CAS No.: 36062-04-1
• Molecular Formula: C₂₁H₂₄O₆
• Molecular Weight: 372.41 Da
• Appearance: Off-white to creamy white powder
• Purity: Typical ≥95%
• Solubility: Insoluble in water and glycerin; soluble in propylene glycol and ethoxydiglycol; partially soluble in ethanol
• Suggested pH: 5.0–6.5 in finished systems
• Storage: Store in a cool, dry place; protect from light, heat, and moisture

Key Benefits & Applications

Tetrahydrocurcumin is a color-stable curcumin metabolite used as an antioxidant and tyrosinase-inhibiting brightening active in professional leave-on formulas.

• Scavenges free radicals and supports antioxidant protection in emulsions and treatments
• Inhibits tyrosinase activity to support even skin tone and a reduction in the look of dark spots
• Off-white appearance avoids the yellow staining associated with curcumin
• Suitable for creams, lotions, opaque gels, and emulsion serums; not intended for clear water toners
• Typical use level: 0.1–0.5% in leave-on formulas; higher levels Available upon request

Formulation Guidelines

Pre-dissolve Tetrahydrocurcumin in a glycol solvent and add it at cool-down to protect color, assay, and antioxidant performance.

• Suggested Use Level: Typical 0.1–0.5% in leave-on formulas; higher levels Available upon request
• pH Range: Suggested 5.0–6.5 in finished systems
• Addition: Pre-dissolve in propylene glycol or ethoxydiglycol; add to the emulsion at or below 40°C; avoid iron and copper contact
• Compatibility: Best in nonionic or anionic emulsions; not suitable for clear aqueous gels or toners; consider a supporting antioxidant
• Combine with Ferulic Acid for complementary polyphenol antioxidant support in tone-evening systems.