Prep + Prime has helped with my dry lips, and I have noticed even after it wears off, my lips aren't as chapped as they usually are. It also diminishes feathering I get at my upper lip line.
Its simply awsome.it never let my lips to dry even if i apply matte or retromatte lipstick.It also enhances the true color of lipstick and never let your lip color to change lipstick shade.its a must have for me.