Fennel seed oil is just perfect on your skin due to its antimicrobial properties. Fennel Oil boosts the skin to diminish pores and even out flawlessness. Fennel seeds are highly nutritious herbs because of their anti-inflammatory, anti-carcinogenic, anti-bacterial, anti-oxidant, and diuretic properties. Fennel seeds have diuretic properties that prevent water retention and flush out toxins and extra fat from the tissues. Moreover, fennel seeds contain anethole that functions similar to estrogen, which stimulates collagen production. Therefore, fennel seeds have a skin rejuvenating and anti-aging effect.