PRP hair treatment is generally safe but may cause minor pain, bleeding, redness, and scalp tightness, and isn't suitable for everyone.
October 2023 in “Benha Journal of Applied Sciences” Methotrexate and vitamin D3 are potentially more effective and safer than triamcinolone for treating localized alopecia areata.
September 2024 in “Journal of the American Academy of Dermatology” Microneedling mildly regrows hair in androgenetic alopecia but not in other types.
June 2021 in “Cosmoderma” Hair transplantation techniques have improved, making the process safer and more effective with less visible scarring.
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May 2010 in “Plant Physiology” Different PIN proteins affect plant root hair growth by changing how auxin is transported.