In the headshop around here.. they don't card anyone. But I'm sure they would if you looked really young.. like under 15 or something. But if people say you look the age you are, I wouldn't worry about it too much. You're not there to buy anything, just to look.. it's just your friend buying.. so it shouldn't be a problem at all. Just don't let the people working know that he's buying for you. And if they do card you, the most they can ask you to do is leave.. Good luck!