Likewise, applying too much foundation can make your skin look heavy, cakey, and mask-like. And while nothing to be ashamed of, if you deal with blisters and acne, overuse is just going to make those features even more pronounced underneath. Those makeup products are formulated strongly, and little goes a long way, especially if your foundation is full-coverage.
Use a light hand and build coverage gradually. A damp makeup sponge or brush can help you achieve an even, natural finish. Remember, less is often more. You can always add more if needed, but starting with a thin layer helps avoid that cakey look. Plus, your skin will look more like, well, skin!