I don't know if Smashbox Photofinish Primer is safe to put on/near the eyes...I've never used it...Maybe someone else will be able to tell you...But, there is MAC Prep & Prime Eye...That'd be a good one for you...
I know what you mean..I'm in my twenties, and I have those little crinkles in the corner of my eyes. I believe they're from years of intensely rubbing my eyes. When I was a child I had HORRENDOUS allergies (I still have them, but not quite as bad..and I don't furiously rub my eyes like that anymore), and I used to almost violently rub my eyes; sometimes I'd have to be taken to the E.R., because my eyes would swell shut, or swell up SO badly). I think that's what's caused the little crinkles, 'cause I've had them for a while now..They're not really noticeable until I put too much shimmer on them, and even MAC Paints will bring them out....I'd also like to find something to help keep them at bay!