Unless you're a trained makeup artist or have watched more than a few YouTube beauty tutorials in your spare time, makeup brushes can be a bit tricky to decode. Not only do they come in a wide range of sizes, but also different bristle shapes, lengths, and density. And it doesn't stop there! Oftentimes brands don't name their brushes by how and where they were intended to be used, but rather with seemingly arbitrary numbers that only add to the confusion.