Crow’s feet are those fine lines that begin to appear as early as one’s mid-thirties. Don’t feel bad if you start to see these appear. Often, they are a sign that you have been laughing and enjoying life. However, they could also be a sign of not using sunscreen and forgetting some simple prevention measures. Here’s how to keep crow’s feet in check: (1) Wear sunscreen and sunglasses to prevent premature aging issues and to keep from squinting. (2) Sleep on your back—sleeping on your face can cause wrinkles to form. (3) Use firming moisturizers to keep even deeper wrinkles from forming.