Citrus Grandis (Grapefruit) Extract is derived from the peel if Grapefruit and full of furanocoumarins and coumarins, which are what is naturally generated when skin is exposed to the sun. In minor amounts it can deliver a pleasing scent to a product and is also an antimicrobial preservative and can help extend products shelf life while also protecting skin care product against bacteria and fungus after being opened.