FENNEL OILINCI: FOENICULUM VULGARE OIL. Fennel is a perennial plant native to the Mediterranean. Crushed fennel seeds are steam distilled to generate scented fennel oil. Fennel oil contains powerful anti inflammatory ingredients that, when applied topically, can work wonders for your skin. Whether you have a bloated complexion, under eye bags, or rosacea, Fennel Oil can help soothe and relax your skin, making it look healthier and happier.