A master’s Thesis in the College of Science at the University of Basra discussed (Frequency of bacteria in healthy and scalp diseases and their activities against some factors) and the message aims to investigate, treat and prevent bacteria that affect the scalp and showed the researcher’s thesis (Mohammed Hasan Mohammed Supervised by Prof. Dr. Munaff J. Abd Al-Abbas) Collection and identification of bacterial isolates from healthy and infected scalps, recording 9 bacterial strains for the first time in the world, studying the effect of chemical and medicated shampoos and testing the effect of antibiotics on bacteria and included The study showed that dye-positive bacteria are more frequent in healthy scalps, noted more frequented bacteria B. cereus and S. aureus in healthy and diseased scalp,  the cchemical shampoo were more effective in killing bacteria than