When I was 14 I went to town on my brows and almost plucked them into oblivion (first sign of my OCD tendencies?!) and the outer edges never sprouted back to what they were - this can also be a symptom of PCOS. Until recently I really didn't like a thick, heavy brow look, but as the years advance, I do think fuller brows can give the face a more youthful appearance where overly plucked, think, arched brows can look a harsh.
I've tried a few brow kits before; e.l.f., Benefit, etc, and while they've been good, they weren't good enough to make me switch over from a pencil. Using a brow kit can be a bit of a faff if you're in a rush, but as brows really do frame your features, if you're going somewhere special and you have the time, it's worth taking it.
This Sleek Brow Kit is in Light, and although it's a little dark for me, I used it in quite a heavy-handed way so you can see the full effect.