What causes grey hair?

Will the heat in the air cause hair on my head and body to grow quicker?

I used Clairol Shimmer Lights for my grey and I guess I didn't rub it up to the white lather and it left my grey, purple...Ho...

I love my hair, but in pictures it is really white and I would like to know if I can tone the white without going to a perman...

Hay yall, I have another quistion for u. are grey squar glasses and long brown hair with a side part emo?

Does applying hair gel cause hair fall? What are the side effects of hair gel?

I recently purchased a wig just to have a new look. I have very fine hair and a hair stylistlist told me that the wearing a w...

Im noticing grey hairs in my fringe and back of my hair, what is wrong with me and how do I fix it?

I have blonde hair and everytime I re-dye my hair it turns blue/grey why is this and is there anything I can do to correct it?

I am thirteen with grey hairs? is that normal? I don't know anyone that has that. Please help me...

are sweepin fringes annoyin ??!