Botanical name : Allium Cepa
Family name : ALLIACEAE
Thai name : Hua-Hom

Onions are edible and possess a distinctive, strong flavor and pungent odor which is mellowed and sweetened by cooking. The bulb comprises fleshy layers of midified leaves, surrounded by papery outer layers.

The active ingredients found in Onion are Quercetin, acts as an anti-flammatory and antimicrobial activities prevents disturbances to wound healing and inhibit the over-production of collagen in a scar also reduce extra cellular matrix constituents (Proteoglycans, Collagen).

Evidence suggests that onions may be effective against the common cold, heart disease, diabetes, osteoporosis, and other diseases. They contain anti-inflammatory, anticholesterol, anticancer, and antioxidant components such as quercetin. In many parts of the undeveloped world, onions are used to heal blisters and boils. In the United States, products that contain onion extract are used in the treatment of topical scars.