HELP!! I have dark brown hair and lately when ever I run my hand through my hair my hand looks yellow from the hair. My brushes are the same too. Yellow ! I don't know what it's. Should I be worried ?
I asked my mom and she it's maybe my oil from my hair. I haven't talk to my doctor yet too.
I have NEVER dyed my hair before also.

Is it oily, or powder , what have you changed recently

Sebum is yellow. I too suspect oily scalp.