September 2024 in “Journal of the American Academy of Dermatology” Dietary changes and supplements mostly did not improve alopecia areata.
The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.
February 2024 in “PloS one” Nutraceuticals that promote hair growth do not reduce tamoxifen's effectiveness in breast cancer treatment.
66 citations,
June 2018 in “International Journal of Women's Dermatology” No cure for female pattern hair loss, but various effective treatments exist.
8 citations,
January 2020 in “Skin appendage disorders” Saw palmetto supplements may modestly improve hair regrowth with few side effects, but more research is needed.