Can you capture your grey hairs or other features on camera?

Anyone smart or more knowing know that a camera can't capture features people point out in person. Like my friend and dad has asked me why I had some grey hairs for my age. Also knew a Korean high schooler that had a grey hair he noticed, and also seen a youtube video who seems to be balding at an early age, his hair all fell out more so than maybe Lee Jong-Won who he reminded me of. Can't find that vid, all I know is that they tried parodying some boy band song from Europe I believe I forget the name.