I recommend MAC Sheer Red.

My daughter bought me this MAC lip balm for my birthday. The case is pretty, but I really love this product because it applies so smoothly and moisturizes so well. It doesn't stain, so it doesn't leave a mark. With just the right amount of shine and color, it looks great and natural on bare skin. Even though it's a lip balm, the color payoff is good, so I think I'll keep using it.