Tetrahydrocurcuminoids

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Tetrahydrocurcuminoids (THC) are derived from curcuminoids (extracted from the roots of curcuma longa, commonly known as turmeric root). Tetrahydrocurcuminoids are phenolic in nature, acting as antioxidants, protecting against free radicals and preventing the generation of free radicals.   Unlike yellow curcuminoids, THC is a colorless compound which can therefore be used in color free cosmetic products that currently employ conventional and synthetic antioxidants.

Curcuminoids and therefore THC offer protection to the skin and should be considered for inclusion as functional antioxidants in topical preparations. THC scavenges free radicals that are generated through exposure to ultraviolet radiation, chemicals or other environmental stress factors which age the skin. The efficacy of Curcuminoids and THC is also concentration dependent, with THC being even more effective at lower concentrations. THC also helps to improve the shelf life of topical formulations by inhibiting the autoxidation of fats by offering protection against rancidity of the fat components used in the formulation of cosmetics.   Tetrahydrocurcumin has been shown to efficiently inhibit tyrosinase. As such, it is an effective skin lightening agent with multi functional topical benefits.  It has been tested to determine its safety for topical use with no irritant or sensitization side effects.   The anti-inflammatory effects of THC combined with their efficient antioxidant action render them useful as ingredients in anti-aging formulations, skin lightening and brightening products and topical formulations designed to maintain general skin health and integrity.

INCI: Tetrahydrodiferuloylmethane

California Prop 65 Statement: The following statement is made in order to comply with the California Safe Drinking Water and Toxic Enforcement Act of 1986. This product is not known to the State of California to cause cancer, birth defects or other reproductive harm.

  • Use stainless steel vessels for production.  Avoid contact with iron or copper.
  • Solubilize in one of the recommended solvents before adding to an emulsion at or below 40°C (104°F).
  • Emulsions should be nonionic or anionic, not cationic.
  • Maintain the pH of the formulation slightly acidic, preferably between pH 5.0 - 6.5
  • Material can be gelled using thickeners such as Carbomer, Acrylated Coploymer and Lecithin
  • Suitable for use in creams and translucent to opaque gels and sera.
  • It is not suitable for use in clear gels/sera/toners
  • Use of Antioxidants and photostabilizers in the formulations is recommended


Recommended Usage Rate: 0.1-1%
Appearance: Off white to creamy white crystalline powder
Tetrahydrocurcumin content: 96.47%
Solubility: Soluble in Ethoxydiglycol, partially soluble in Dimethyl Isosorbide and ethanol, soluble in propylene glycol (1:8 at 40°C). Polysorbate 20 (1:4 @ 40°C), insoluble in glycerin and water
Country of Origin: India
Storage: Store in cool, dry place in original container away from light and moisture
Shelf life: Two years, properly stored.