Each foundation application method has different pros and cons. A sponge creates easy, flawless blending and works best with lighter, liquid formulas. They also need regular washing and aren’t quite as hygienic. Alternatively, brushes come in a variety of shapes and sizes for simple tailoring and give a professional finish. However, it’s more challenging to get a seamless blend, especially with liquid foundations. They are better suited for power foundation than sponges.