The Beauty of Soy for Skin, Hair, and Nails

The chapter discussed the potential benefits of soy and soy isoflavones for dermatological health, particularly focusing on skin, hair, and nails. It was found that dietary soy consumption for 3-6 months improved skin health and fingernail appearance in both pre- and postmenopausal women, with premenopausal women experiencing quicker benefits for nails. Hair appearance and manageability also improved, though to a lesser extent. Evidence suggested that soy protein and isoflavones, when applied topically, enhanced skin health, and dietary soy might complement these effects, although most studies were conducted on animals. Overall, the data indicated that soy consumption could enhance the appearance of skin, hair, and nails, supporting a combined dietary and topical approach to personal care.