the study was undertaken to assess and correlate the different types of hair with the temperament of a person. Three criteria were considered, thickness, color and shape of the hair. bilious temperament has darker hair color and thick. sanguine temperament has lighter and thin hairs as compared to bilious variety.phlegmatic temperament has lightest and thinnest hair color. although the shape of the hair has no association with the temperament of a person. these results go along with the unani concept of hair and temperament.