Mid-20s w/ Creases in Face. How Can I Add Volume?

I'm in my Mid-twenties Developed Creases in my Face. What Do You Suggest for Adding Volume Back Around my Mouth? Since I've lost some weight in my face, started a higher stress job, and the consequences of the sun have set in, I've developed deeper wrikles around the sides of my mouth. Should I stick to anti-aging lotions and hope it gets better because I'm only in my twenties or I am a good canidate for a certain type of filler? I've never had any cosmetic surgery done.