La Prairie Cellular Platinum Serum Platinum Rare 1oz, 30ml La Prairie Cellular Platinum Serum Platinum Rare has the following features: Pure. Rare. Eternal. La Prairie’s Cellular Serum Platinum Rare has extraordinary properties. Just a few precious drops of this ingenious rejuvenating serum help maintain the skin’s electrical balance for truly age-defying results. The skin’s natural moisture barrier is restored, so hydration and protection are enhanced. That’s just the beginning. Tensing agents, a skin brightening complex and potent antioxidants result in skin that is firmer, brighter, rejuvenated. Agelessly beautiful.