Hair growth assessment techniques

Abstract

• Qualitative and quantitative methods are essential for objectively evaluating hair growth activity. • Standardized techniques are mandatory for clinical studies and for evaluating agents that inhibit or promote hair growth. • Hair density, hair width, and global photography evaluation are generally accepted parameters for judging hair volume, hair growth, and hair loss. • For daily practice and individual trichologic followup, videodermoscopy, pull test, TrichoScan and in selected cases scalp biopsy are helpful tools. © 2008 Springer-Verlag.