Firstly, hair perfectly protects your head from cold and heat, eyelashes protect your eyes from specks, and eyebrows prevent sweat from getting into your eyes. Secondly, hair is an adornment of a person, thus having a positive effect on his psychoemotional state. Thirdly, the condition of the hair can indicate various diseases. Early gray hair is often associated with impaired thyroid function; dry scalp and hair indicates poor kidney condition; oily hair, which becomes salted literally on the second day after washing or falls out, signals about diseases of the liver and gall bladder; tortured seborrhea (disease of the sebaceous glands) or dandruff, should treat the intestines and biliary system.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.