June 1999 in “Proceedings of SPIE” The CO₂ laser is better for hair transplantation because it causes less damage than the Ho:YAG laser.
August 2025 in “Arabixiv (OSF Preprints)” Male pattern baldness is mainly caused by brain heat stress, not DHT.
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September 2020 in “Biopolymers” Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.
January 2015 in “Springer eBooks” Hair damage shows as fragility, dullness, and discoloration, varies by ethnicity, and is worsened by cosmetic procedures and diseases.
January 2017 in “Clinical approaches and procedures in cosmetic dermatology” Cosmetic procedures can harm hair, but damage can be minimized with knowledge and care; however, once hair is damaged, it cannot be reliably repaired.