It lasted 2 years and then, in periods of stress for 5 years after, I pulled my hair here and there. Most of my hair has regrown, but is still thin around the scalp areas/my part. I'm also prematurely getting white hair in my late 20s. Will laser combs/minoxidil/Biotin short term help with regrowth? Is my hair now white because it's been pulled so many times in the past? Will I need to be minoxidil long term? I'd love some advice.