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nt-family: Verdana, Arial, Helvetica, sans-serif;">A: human hair has natural protein . It is easy to tell by burning and smell : human hair will be ash , which
will go away after pinching. human hair will smell foul . When burning , the human hair will showwhite smoke.While synthetic hair will be a sticky ball after burning and will show black smoke.moreover,
human hair may have very few gray hair and split ends. It is normal and not a quality problem.
