What it is: A natural-finish stick primer that fills and minimizes the appearance of pores and fine lines with its lightweight, breathable formula. Who it's for: All skin types. What it does: Designed for use underneath makeup as a primer base or worn alone to control oily spots and smooth the appearance of skin, this primer contains antioxidants and vitamin C to target aging signs, firm and tighten the skin and protect skin from environmental stress. It also contains amino acids, which help hydrate, tighten and firm the surface of your skin.