A healthy diet plays a major role in the condition and growth rate of hair. Hair may thin due to nutritional deficiencies. Any health related problem may also retard the growth of hair. Take high protein diet, since hair is made up of protein a low protein may retard the hair growth cycle. Do not take stress, because excessive stress will not only slow down the hair growth cycle, it may also result in hair loss. Regular sleep of seven to nine hours of boosts the hair growth cycle. Take a balanced diet, it helps maintain and improve good hair growth. Massage your scalp regularly to promote blood circulation because this boosts hair growth. Take choline and inositol supplements, they are helpful in slow hair growth. Tyrosine an amino acid is also helpful in boosting hair growth cycle. Vitamin A, B, C, E, and K are very important for good hair growth. Protein rich foods like fish, meat, egg, cheese, nuts, etc.
Avoid any contact with chlorinated or saltwater and overexposure to the scorching sun; it will retard your hair growth. Use a shampoo that contains SPF if your hair is overexposed to the sun.