SUNSCREEN!!!!!!!!!!!!!!!!!!!!!!
If you wear sunglasses whenever you're outside, that will take care of the squinting. Keep your skin hydrated, including the skin around your eyes, and that will probably help get rid of the fine lines or reduce them dramatically. If you eat a balanced diet with lots of fruits and vegetables, that will do a lot for your skin. As far as skincare, use a gentle cleanser every day (I like Purpose), use a good oil-free moisturizer (there are tons of these you can choose from) and make sure to wear SPF30 or better broad-spectrum sunscreen. Don't be afraid to sink some cash into a good sunscreen, especially - this is your skin and it deserves the best. I really like Shiseido sunscreen lotion because it's not greasy on my face at all, but Neutrogena dry-touch is also very popular for the face. Lastly, make sure to use a heavier moisturizer at night. When I started doing all of these things, my skin got clearer and looked better than it ever had. I almost never break out and I wear less makeup now because I simply don't need it. Good skincare is absolutely worth it.
If you'd like some more skincare info, go to makeupalley.com and check out the skincare board - lots of great info there.
