Resveratrol is usedin the cosmetics.There are 3 kinds of resveratrol
1)synthetic 99% resveratrol
2)(synthetic+natural) 98% resveratrol
3)natural 98% resveratrol

And for the natural resveratrol,there are different plant source
1)polygonum cuspidatum extract / giant knot weed extract 50% 98% resveratrol
2)grape skin extract 5% resveratrol

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