Onions aren’t just a cooking staple, there are some pretty incredible health benefits of onions and their beauty benefits are just as impressive. According to Mercola.com, “Onions are surprisingly high in beneficial polyphenols, which play an important role in preventing and reducing the progression of diabetes, cancer, and neurodegenerative and cardiovascular diseases.” The real secret to onion power is that they’re loaded with quercetin, a powerful antioxidant. Eating healthy foods is essential for looking your best but there are also some amazing onion benefits from using them topically.