I started graying my freshman year in HS at 14. The guy that sat behind me in Algebra would pull out my white hairs one at a time. I told him to knock it off as my mother had told me for every one that I pulled out two white ones would grow back. By the age of 19 when I was married it was noticeable in my photos.
It never bothered me until I was in my mid 30's and within a few days of one another I got two comments as a result of my white hair. The first was when I was taking my two youngest children back to school shopping and one of the sales people commented about how nice it was of "Grandma" to take her "Grandchildren" shopping. The other was a waitress asking if I would like the senior discount at a restaurant. After that I colored my hair red for years with the help of my daughter. After she moved away from home it got to be too much work for me to keep up and I just let it go. Now my age matches my hair so it doesn't bother me. Ann in TN