Premature aging?

Is it possible to reverse premature aging (In other words improve skin conditions)?

I used to go outside a lot to play basketball in the sun without wearing sunscreen and it kinda damged my skin. Its not that bad but it still bothers me ALOT. I’m only 15.

What bothers me the most is my uneven skintone. And also my laugh lines, which aren’t deep, but are "darker" than my face color.

Answers will be greatly appreciated. Thanks.