May 2011 in “Archives of Plastic Surgery” This study found that the inverted U-shape hairline is the most common among Korean male adults in their 20s and 30s, with an increased prevalence of the M-shape in their 30s.
May 2008 in “Texas ScholarWorks (Texas Digital Library)” This dissertation reports three findings: vertical mergers can facilitate downstream collusion, advertising for new products may follow an inverted U shape, and incumbents might obscure the quality signals of uncertain new market entrants.
December 2025 in “Journal of Surgery Research and Practice” This study presented a method for female hairline transplantation that connects the Diverting Point and Part Line to recreate a natural hair flow, enhancing aesthetic outcomes by providing a more natural and feminine hairline.
June 2024 in “Current Developments in Nutrition” This population-based study found that n-3 fatty acid intake may not benefit and could potentially harm hair loss improvement in middle-aged or elderly men, as higher n-3 intake was associated with a greater risk of non-improvement in male pattern hair loss.
January 2010 in “Springer eBooks” Pubic hair transplantation can help women with little to no pubic hair, using scalp hair for a natural look and requires careful aftercare.
