Well, if you live in cold climate, like northern Europe, there is no need to use SPF over 30 during winter and SPF 40 during summer. I used to use SPF 50 all year round and my doctor told me it's actually has an adverse effect on my skin because a bit of sun exposure is essential for vitamin D production. So I've been using 30 SPF since, by Clarins and the same eye SPF cream by Clarins. It also has some other anti-oxidant properties. And you should start using moisturizing eye cream at night if you haven't already (not the anti-wrinkle, just moisturizing). The truth is, your skin starts to detiriorate from the age of about 16 - 17 but at a very slow rate till your late twenties. There isn't anything you can do about that. But you can stall the process by eating as little sugar as possible, not smoking and using appropriate SPF all over your body.