Soy Protein Containing Isoflavones Improves Facial Signs of Photoaging and Skin Hydration in Postmenopausal Women: Results of a Prospective Randomized Double-Blind Controlled Trial

    September 2023 in “ Nutrients ”
    Julianne Rizzo, Mildred Min, Sareema Adnan, Nasir Afzal, Jessica Maloh, Cindy J. Chambers, Vivien Fam, Raja K. Sivamani
    TLDR Soy protein with isoflavones reduces wrinkles and improves skin hydration in postmenopausal women.
    This 24-week randomized double-blind controlled trial involving 44 postmenopausal women found that soy protein isolate with added isoflavones (SPII) significantly improved facial signs of photoaging and skin hydration. The SPII group showed a 7.1% reduction in wrinkle severity and a 2.5% decrease in facial pigment intensity by week 24. Additionally, skin hydration increased by 39% on the left cheek and 68% on the right cheek. No significant changes in sebum production were observed. The study concludes that dietary soy protein supplementation with isoflavones can enhance skin health in postmenopausal women.
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