Onions

Without onions, a meal can never be considered complete. Onions can be used in a variety of ways, including raw, caramelized, roasted, fried, or pickled. It makes onions a vegetable with many applications

In addition to adding flavor to your favorite foods, onions also increase the production of keratin. This vegetable has a very high concentration of N-acetylcysteine, which is converted into L-cysteine, a component of keratin. Additionally, onions contain folate, a crucial micronutrient for keeping strong hair follicles. Onions, according to the USDA, also contain trace amounts of biotin, which increases the levels of keratin. In addition, onions are a good source of potassium and iron. Not only that, they may have several health benefits, mostly due to their high content of antioxidants and sulfur-containing compounds.