It's called lines of expression. We are supposed to have lines from moving our face. Airbrushing, Botox, & Photoshop is messing up our heads. Girls younger than you are in magazines and on the runway. I read of a model that was 14 and on the runway. In the magazines, their lines are airbrushed. So, they look like perfect or non-real people. A 14 - 16 y/o airbrushed. It's freaking ridiculous. It's making girls ask for Botox for their proms. I read where some are actually getting it.
Staying out of the sun and wearing sunscreen is the prevention of wrinkles. However, it doesn't stop sagging. They don't tell you that one.
Go ahead and smile and enjoy life. Stone faces are not pretty. Smiles are much prettier.
As a child, I would love to see my Daddy smile. It would make his eyes turn up. I thought those were happy lines. Nothing wrong in that.