Because it's thick in texture, a little goes a long way. That means not only will your foundation (if you even need it) last longer, but the primer itself will, too. Don't let its radiance claims conjure up images of glittery bits or excess shine, however. This primer's pearl tint lends a sheer, healthy-looking glow to the skin. And that's exactly why it's been described as "candlelight in a tube."