Premature greying is greying before the age of 30 yr, after that it is natural physiological process. Genetic inheritance is one of the important cause behind it. Stress, nutritional deficiency, thyroid problem increases it. It is important to check the extent of greying and then deal with it. Proteins are needed for production of melanin. Food like sprouts, beans, nuts, soya are excellent source of proteins. Oil the scalp 3/week and wash it 3/week consult trichologist for treatment.