Tetrahydrocurcumin (THC), as the active and main metabolite of curcumin produced in organisms, is hydrogenated from the curcumin isolated from the rhizome of curcumin in the ginger family. Tetrahydrocurcumin is the main whitening active ingredient in natural turmeric root extract, which not only has the strongest tyrosinase inhibitory activity, but also has excellent chemical stability, and the appearance of odorless white powder, thus overcoming the chemical instability of ordinary turmeric extract easy to stain the skin. Ordinary turmeric extract is yellow, poor chemical stability, with photosensitivity, in the light, easy to react with the skin and make the skin stain.

Functions and effects 

Tetrahydrocurcumin is a natural functional whitening raw material with strong activity of inhibiting tyrosinase, and its whitening effect is better than arbutin which we know well. oxygenfreeradicals can effectively suppress the generation of oxygenfreeradicals and eliminate the formed freeradicals. It has obvious anti-oxidation, inhibition of melanin, repair and freckle removal, anti-inflammatory activity, blocking inflammatory process and so on. In addition, the inhibition of free radicals, lipoxy and enzymes of various inflammatory factors, collagenase, and hyaluronidase reflects the potential anti-aging effect of tetrahydrocurcumin.