<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello,I am Soumaya from Tunisia.I am 29 years old .I am 157 cm tall and I weigh 48 kilos.I do not suffer from a hard desease ,but I usually go through very stressing periods.I sometimes can not sleep at night .My problem is that I have new grey hair and I want to avoid that so much.I take care of my hair but I do not know how to avaoid early greyish hair.Could you help me please?  <response>: Hello, Thank you for posting on Chat Doctor. Greying of hair occurs when the melanin of a particular hair follicle is permanently exhausted. Premature grain of hair is attributed to many factors like diet, nutrition, UV rays, pollution, cosmeticsdyescolors, genetics, medications etc. Treatment of gray hair is pretty challenging and results are not very encouraging. I would advise you biotin and calcium pantothenate combination tablets for at least 6-8 months. Apply Alexis gel containing Militant, which is a new compound that has shown good results in premature grain of hair. Also, a novel hair sunscreen cum hair serum Q era black has shown good results in prevention of hair damage from sun and pollution. Use gentle shampoo and conditioner for regular hair wash. Use coconut oil twice a week for scalp nourishment. Chat Doctor. Try to limit your smoking and alcohol intake. I am sure this will take care of your issue. Thank you 