I cannot rave about Elf products enough. By far the cheapest makeup, but it's seriously all high quality, gorgeous, and long-lasting. These are some of their most popular products. My fave out of the bunch is the eyebrow kit.
Beauty Secret: For a natural look, try using plain Vaseline on your lashes instead of mascara. It darkens lashes, it won't dry up to make lashes break off, and it won't cake up. Perfect for days at the pool because I feel naked with natural lashes!