Elf is unsure if elf camo concealer is water or silicone based. Elf uses the concealers to cover any blemishes, dark circles, or imperfections that may be present on the face. Elf finds that a little goes a long way when applying the concealer, as a small amount can cover a large area. Elf has noticed that the concealer can be a bit drying on the skin, so it's important to moisturize well before application. Elf also likes to use a light foundation over the concealer to give the skin a more even tone.