Soy isoflavone is widely used in dietary supplements and functional foods due to its phytoestrogenic properties. It supports hormonal balance, particularly in women during menopause, helping to reduce symptoms like hot flashes and night sweats. It is also studied for its potential role in supporting bone health and reducing the risk of osteoporosis. In skincare, soy isoflavones are added to anti-aging products for their antioxidant effects, which may improve skin elasticity and reduce wrinkles. Additionally, it is used in research and nutraceuticals for its possible cardiovascular and metabolic health benefits.