Hello, Thank you for posting on HCM. Greying of hair occurs when the melanin of a particular hair follicle is permanently exhausted.Premature greying of hair is attributed to many factors like diet,nutrition, UV rays, pollution, cosmetics/dyes/colors, genetics, medications etc. Treatment of grey hair is pretty challenging. I would advise you biotin and calcium pantothenate combination tablets for atleast 6-8 months. Apply Altris gel containing Melitane, which is a new compound shown good results in premature greying of hair. Also, a novel hair sunscreen cum hair serum Q sera black has shown good results in preventation of hair damage from sun and pollution. Take plenty of fresh fruits and vegetables in your diet and try to de-stress your lifestyle. Try to limit your smoking and alchohol intake. I am sure this will take care of your issue. Thank you Dr Hardik Pitroda