Forehead between eyebrows line. Had it done a few times - sometimes too strong, sometimes little, but all in all - it all depends on a doctor. And it's definitely worth it. If they smile and take it as it's fun, want to make you look better want you to smile - they won't overdo it and make it right. If they're just there to inject botoxin - it doesn't come out right. But all in all - totally worth it!!