I am 16. I have a Mustache. I wanna cut it of but if I shave it it will come back thicker. I was told that if you shave at a young age. You start looking older quicker. Like I am 16 and I like fairly young. I could pass for 14 or 13 (I know that's sad). I know people who shaved at 14 and they look 16-17. but the problem is I don't like the Mustache.. I look like Pedro from Napoleon Dynamite. So if I trim it will it come back faster and thicker. I have been testing it.. and I have never shaved and I look really young. If I start shaving now.. I will start looking way older. But If I don't shave now.. and keep the stache till I'm like 18. Then when Im like 40.. I would look younger then my friends who are 40 too.