What Is Grapefruit Seed Extract?
What Is Grapefruit Seed Extract? Grapefruit seed extract is taken by mouth for bacterial, viral, and fungal infections including yeast infections. Grapefruit oil is applied to the skin for tired muscles, hair growth, toning the skin, and for acne and oily skin. It is also used for the common cold, flu (influenza), and swine flu.