Another must-have accessory for vacation is makeup. But since you need to pack light, stick with makeup that does double-duty. First thing every morning, moisturize your face with a lotion containing SPF. If you're going for the fresh-and-clean vacation look, that and a little swipe of mascara are really all you need.
However, if you want to wear a little more on your face, but don't have room to pack all your products, look for makeup you can use several different ways. For example, you can find liquid makeup that's both a lip stain and a cheek stain. So you get blush and lip color in the same package. You can also find mineral powder makeup that comes in one tube with an attached brush. Anything that does double duty is perfect for travel.