Define

 
Grape Seed Extract, ie GSE, which has strong function of anti-oxidiant, anti-aging. 
 
Grape  seed  extracts  are  industrial derivatives from whole grape  seeds  that  have  a  great  concentration  of vitamin E, flavonoids, linoleic acid, and  OPCs. Typically,  the commercial opportunity of  extracting grape  seed constituents has been  for chemicals known  as  polyphenols,  including  oligomeric  proanthocyanidins  recognized  as antioxidants.

Common specification: OPC 95% UV