Antioxidant cosmetic skin care compositions formulated to combat conditions associated with free radical damage and oxidative stress are provided. The compositions contain effective amounts of one of several active agents, including an agent derived from one or more of the plant species: Lycium barbarum, Punica granatum, Vitis vinifera, Aspalathus linearis, and Camellia Sinensis as well as cosmetically acceptable carriers. These cosmetic compositions find use in improving the appearance of aged or damaged skin.