Healthy hair is a sign of general well being and youth .Nevertheless, hair serves as a great aesthetic tool and means of nonverbal communication. Hair colour and style can significantly alter the physical appearance of a person and thus alter his/her body image. As graying of hair is perceived as a sign of old age The rule of thumb states that by the age of 50 years, 50% of the population would have 50% of their hair turned gray. read more
