Marketers have made it easy for us to stay covered with their products by packaging them in convenient travel-size containers. Experiment with a couple of different brands or types of sunscreen to determine which one best suits your skin type. Buy a few small tubes so you can keep one in the car, another in your golf or gym bag and one at home.
Remember to put sunscreen on the places you can't see, but where the sun can reach. There are clear, spray-on products that work great for scalp protection. You may not have had a bald spot 20 years ago, but chances are you do now. Protect it with sunscreen.
Source: http://www.skincancer.org/prevention/sun-protection/prevention-guidelines