More than visually, what tells me my hair is getting longer is that it takes more than running a wet washcloth over it to get it wet, it doesn't dry immediately (how annoying ... haha), and during the last few warmer days (and nights), I haven't needed to wear my sleeping cap.
It's pretty curly. It was before, though, and was always curlier the shorter it was, so it makes sense that it's especially curly now. I can still see scalp through it. I can't wait until that's a thing of the past. And I'm still more than eager to grow bangs and cover up some of the expansive forehead! The grey, I'll worry about later, too.