RE:Subject matter of experts was only able to find one data point so far...
https://sa1s3.patientpop.com/assets/docs/108602.pdf
As shown by ultrasound measurement, Resveratrol B E increases skin density by 18.9%.
seems they were pretty proud of 18.9% because it's bold :)
TFC-1326 Increased Skin Density (Collagen and Elastin) by 37%