White Hair at early age

At the early age itself there are lots of white hair. How to remedy it.
also is there a way to naturally convert the white hair to black hair without any side effects.

Hello Sir,

I am Muhammad faryad from Lahore Pakistan now working in dubai…my problem is white hair.My hair black to changing into white clour on head and shavning place.Now iam 22 years old…i think white hair coming from my age 15…almost 7 year.Now 15% is white hair on Head and 10 Hair on shavning place.Please tell me for good medicine or other suggestion me
Your Faithfully,
M Faryad…