DuWop Subsurface Original The Sub-Surface from DuWop is a double-ended pre-concealer treatment that includes a hydrating undereye primer to perfect your concealer application paired with a blemish treatment to help heal spots underneath concealer. This anti-aging eye primer contains Squalane which is a natural ingredient that is known to boost the skin's ability to regenerate nourish hydrate and protect itself. Squalane also softens the skin diminishes fine lines and assists in the acceleration of new cell growth. The blemish treatment has salicylic acid to battle blemishes and dry them out underneath concealer.