I hope you mean "keratin" and not "kerosene" !! With any chemical process, it's best to see a professional to prevent damage to your hair.
Don't do it. It will make you feel ill (I speak from experience).
Long hair should be tied back when working in the laboratory
5inches long
Her hair should be as long or as short as he wants it to be. What race you are doesn't dictate what hair style you are allowed to have.
Indefinitely
No because your long hair represents strength and power for yourself
Well it really depends on how long yo hair is
Your hair should be long and it should be strong to withhold breakage.
you hair has to be at least 10 inches long in order for you to donate it
As long as it is classified as "1k water clear" Ask the attendant to be sure.
You should keep your hair washed,greased,and brushed.
He should oil his hair regularly and consult a hair expert.