When did you start to grow white hair or look older?

I saw 2 white hairs on my head today but I had more white hair as a 15 year old - when my stress went away my white hair began to turn black and every year I had less and less white than than I did the year before. I do not know if my whole body is getting younger or if it is just my hair that is reversing age. I've been trying to reverse aging with health maneuvers and nutritional actions.

When did you start to grow white hair or look older?
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