Some people seem to grow long, luscious locks effortlessly. Others, like me, dream of having hair that cascades past their shoulders but can’t seem to grow long hair no matter how fastidious they are ...

Few things signal getting “old” like going gray in our appearance-obsessed society (even if, to be clear, it can be plenty normal to sprout silvery strands in your 30s). But that’s just one of several ...