Eschscholzia Californica Leaf Cell Extract Good Antioxidant Anti-Ageing Eschscholzia Californica Leaf Cell Extract at a glance From the California poppy plant Has antioxidant properties Fights environmental stressors Lacks independent research supporting its use in skin care Eschscholzia Californica Leaf Cell Extract description _Eschscholzia californica_ leaf cell extract is derived from a plant commonly known as the California poppy, which produces bright yellow, orange, and red flowers that are California’s official state flower. Though there is not extensive research on how this cell extract can impact human skin, it does have antioxidant properties, meaning it can protect against environmental stressors that lead to visible signs of aging. Sold under the trade names Naolys Eschscholtzia Californica Culture or OxyRelax Californian Poppy, use levels of the leaf cell extract in cosmetics is 0.5–1% as supplied in a glycerin and water base.