The only way to prevent any kind of lines from appearing on your face is to stop all use of facial expressions. No more smiling or uplifting your eyebrows in surprise! I had a few rings around my neck, lines on my forehead and creases at the corner of my eyes from smiling. I really didn't want to turn into an unsmiling mask, so I've found a few non-botox treatments that minimize the appearance of dynamic wrinkles but they haven't gone away entirely.
1% Retinol - good for acne as well.
Janson Beckett AlphaDermaCE - contains hexapeptide-3 [arigilene] that sends little triggers to slightly relax facial muscles, making dynamic wrinkles [the ones that appear when you smile or frown]. After about 3 months of daily use, the rings around my neck have nearly disappeared and forehead lines are much shallower. Friends and family noticed a difference. Unfortunately it doesn't seem to have an effect on the deeper creases at the corner of my eyes; I've been using Matrixyl 9000 and it seems to help a little.
It's odd; when I was in my twenties, I vowed to grow old gracefully. Now that I'm in my forties I'm fighting it everyday; I do NOT want to inject poison into my face to keep wrinkles away, nor do I want to go under the knife. I keep hoping daily use of topicals will help. Who knows, I may change my mind when I reach 50!