Nowdays,young man having a white hair in the head, what the causes and prevention of this matter?

Well, he could have the recessive gene that causes albinoism. No cure for that. Gene therapy may be possible one day.

Or it could be that he has had a traumatic experience, the shock of which has caused his hair to turn white at a young age. No cure, but hair dyes are possible, but would need constant renewal, to not show white roots.

Better to accept your appearance rather than pretend it hasn't happened to you, I suggest.

Nowdays,young man having a white hair in the head, what the causes and prevention of this matter?

How you go grey, when you go grey, how you go bald, and when you go bald are ALL genetically determined by your mother. Look at her brothers, and you will see a similar pattern to yourself. You can't do anything about it at all.

Nowdays,young man having a white hair in the head, what the causes and prevention of this matter?

You can't really prevent you hair from turning gray [or white] but you can correct it by putting your natural color over it. But before you color it in order for it to take to the gray hair you must soften it with a creme developer most likely 20 volume developer.

What causes hair to turn white is when we get older our hair losses it's pigment. It also happens to a lot of younger people to because they start to lose pigment at an earlier age.

So your hair is actually losing it's pigment and not turning white.

Nowdays,young man having a white hair in the head, what the causes and prevention of this matter?

no point in preventing it as it is already there. if you want to hide it use a dye, else it is nothing to be ashamed abt