Correct, conceal, transform. This skin-perfecting duo helps custom correct dark circles, spots, redness, dullness and more. Each duo has two levels of coverage. On one end, there's a light, luminous, wears-all-day formula with brush applicator to sweep across larger areas. On the other end, there's a full-coverage hydrating concentrate with sponge tip to cover targeted areas for up to 24 hours.