17 year old guy with bad expression lines?

I'm a 17 year old guy and i already have some pretty bad brow lines. you can clearly see the creases in my skin even when i'm not raising my eyebrows or anything. I try to keep my brow relaxed most of the time, but I also do a lot of acting, which requires a lot of different facial expressions. is there anything i can do to prevent the further formation of brow lines or anything i can do to help reduce the appearance of the ones I already have?