8 citations,
October 2017 in “Dermatology practical & conceptual” A spermidine-based supplement may help hair grow longer by keeping it in the growth phase.
20 citations,
January 2021 in “GeroScience” Spermidine helps protect against aging by preserving telomere length.
6 citations,
July 2023 in “Nature cell biology” SOX9 helps determine stem cell roles by interacting with DNA and proteins that control gene activity.
May 2025 in “Science Advances” PIEZO1 helps keep hair follicle stem cells inactive, affecting hair growth.
January 2020 in “International Journal of Applied Biology and P” Finasteride treatment for three years changes certain polyamine levels in the blood but not in urine.