Cross-section trichometry is an accurate method to measure hair loss and growth.
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October 2020 in “Journal of Investigative Dermatology Symposium Proceedings” Platelet-Rich Plasma treatment improved hair growth and reduced inflammation in patients with patchy hair loss, but not in total hair loss, and Optical Coherence Tomography was useful in tracking this progress.
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December 2018 in “Journal of Dermatological Treatment” The PRP-like cosmetic with biomimetic peptides is potentially effective and safe for treating alopecia areata.
May 2025 in “Archives of Dermatological Research” Patient-reported hair improvements align with actual hair density changes, not hair width.
January 2020 in “International Journal of Trichology” PRP injections are not effective for long-term treatment of temporal triangular alopecia.