Tetrahydrocurcumin, a natural functional whitening material, is hydrogenated from curcumin (curcumin) isolated from the rhizome of the ginger plant turmeric (curcuma longa). Tetrahydrocurcumin is white powder in appearance, its molecular formula is C21H24O6, CAS number: 36062-04-1.
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.