There are two ways in which a lot of us don't get the most out of our sunscreen: We don't apply enough and we don't apply often enough. For the first problem, you should apply at least an ounce of sunscreen. For the second issue? Well, you should apply sunscreen at least every two hours of being in the sun.

Problem is that oftentimes I am usually doing so many things (gabbing with my friends, running after my girls, swimming laps, etc.) while I am outside, that I often forget when I need to reapply. The Personal UV Monitor ($29.95) from Oregon Scientific is just what I need. After programming in your skin type and your sunscreen's SPF level, this genius little device will alarm when you've hit your limit in the sun. The coolest part? The exposure time automatically updates with changes in UV intensity. While you may not be paying any attention to the time, it's good to know that something's got your back -- So strap it onto your bag or belt loop (or anywhere really). Cool right? You can buy one from OregonScientific.com.