Get grey hair dye or just let it turn natural grey.
they covered my gray hair just the roots and now my hightlights are green?
Ocean water may interact with a chemical in your hair to turn it green. However, ocean water alone will not turn your hair green.
If you use the right dye (preferably Manic Panic) then it shouldn't turn grey. I dyed my hair purple and it stayed that way.
No. Smoking can not turn your hair green. it can do other things like turn your teeth yellow and turn your hair gray and get wrinkles. Also die sooner.
No but it can be damaged. :)
No, the progress is irreversible, once the hair is grey, it can only become whiter.
no it will not turn your hair green
Hair turns gray when the pigment cells located at the roots of each indivdual hair die. Therefore, unless certain parts of red-haired-peoples body's are immortal, red hair does turn grey.
Permanent colour doesn't wear off. Your natural colour grows out. If you were grey before you dyed your hair then the roots will grow out grey. Colour doesn't make your hair turn grey.
Most likely, it may also turn a green blue.
Sorry to say but there is no food that doesn't turn your hair grey. It's a natural thing that comes with ageing.