Tetrahydrocurcumin (THC for short), as the active and main metabolite of curcumin in organisms, is derived from the hydrogenation of curcumin separated from the rhizome of curcumin of curcumin.
Curcuma Longa L. (Latin name: Curcuma Longa L.), also known as Turmeric, tripod incense, Millinoid, turmeric, etc., is a perennial herb, with well-developed roots, oblong or oval leaves, and pale yellow corolla.Mainly produced in Taiwan, Fujian, Guangdong, Guangxi, Yunnan, Xizang and other provinces of China;It is also widely cultivated in East and Southeast Asia.Turmeric is the commercial source of the traditional Chinese medicine \”turmeric\”. Turmeric is used to pick out impurities, soak in water, scoop up, moisten thoroughly, slice and dry.Slice turmeric to remove impurities and residual fibrous root, scrub mud debris, dry for medicinal purposes.
Tetrahydrocurcumin is the main whitening active ingredient in the natural curcumin root extract. It not only has the strongest tyrosinase inhibitory activity, but also has excellent chemical stability. Moreover, it has the appearance of odorless white powder, thus overcoming the defect that the chemical instability of common curcumin extract can easily make the skin stain.The common turmeric extract is yellow, with poor chemical stability and photosensitivity. Under the light, it is easy to react with the skin and make the skin stain.
- Anti-uv, free radical scavenging
Inhibition of tyrosinase 3. Inhibition of melanin, anti-inflammatory activity 4. Blocking of inflammatory process In addition, the inhibition of free radicals, the inhibition of various inflammatory factors lipoxygenase, collaginase, hyaluronidase, reflects the potential anti-aging effect of tetrahydrocurcumin.
Clinical trials of whitening
- Prepare a cream with 0.2% THC and a control cream
- Apply it twice a day for 8 weeks, and measure the melanin content in the subjects\’ left and right forearms with a melanin detector.The average melanin content before the experiment was taken as the baseline, and then the melanin content was read at the second, fourth and eighth weeks, and recorded as the average value, and the regression rate of the two creams on the melanin was calculated after 8 weeks.
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