Onion is a perennial herbaceous plant belonging to the lily family and the onion genus. It has a pungent and sweet taste, a warm nature, and belongs to the lung meridian. It is rich in nutrients such as potassium, vitamin C, folate, zinc, selenium, and fiber, and has the effects of protecting cardiovascular and cerebrovascular health, beauty, and nourishing the skin.

1. Protecting cardiovascular and cerebrovascular health: Onion contains prostaglandin A, which can dilate blood vessels, reduce blood viscosity, regulate blood pressure, reduce peripheral blood vessels, increase coronary blood flow, and alleviate thrombosis.

2. Beauty and skincare: Onions contain trace element selenium, which can eliminate free radicals in the body, enhance cell vitality and metabolic capacity, and have the effect of reducing wrinkles. In addition, onions are rich in vitamin C and niacin, which can promote the formation of intercellular matrix and repair damaged cells, making the skin smooth, rosy, and elastic, and have the effect of beauty and skincare.