I'm about 4.5 months on T, and I've got some significant facial hair coming in. I mean, not enough to really be proud of, but enough that if I don't shave at least once a week I look pretty scraggly. It started on my chin, and now I have some growing in the sideburn and moustache areas and a few random ones on my cheeks. If I go more than a week without shaving, it's definitely noticeable to others, as long as they're near me (you can't see it across a room or anything). But I'm prone to being hairy, so I think this is probably happening faster to me than it does to most people.