Soy isoflavone is widely used in dietary supplements and functional foods due to its phytoestrogenic properties. It supports hormonal balance and is commonly used to alleviate menopausal symptoms such as hot flashes and night sweats. It may also contribute to bone health by helping maintain bone density in postmenopausal women.

In the cosmetic industry, soy isoflavones are added to skincare products for their antioxidant effects, helping reduce signs of aging and improve skin elasticity. Some studies suggest potential benefits in supporting cardiovascular health by helping regulate cholesterol levels.

It is also researched for its role in promoting prostate and breast health, although findings are still under investigation. Due to its natural origin, it is a popular ingredient in vegetarian and plant-based health products.