COLLECTION: Platinum Rare / Platine Rare Cellular Night Elixir marks the beginning of a new era in youthful skin research. The result of La Prairie's heritage and bold scientific advances, this unique formula offers skin a true transformation, like a renewal. Cellular Night Elixir is the most powerful regenerating treatment developed by La Prairie Laboratories. It promotes the four functions essential to the skin's renewal process: detoxification, nutrition, respiration and immunity. For the first time, these four key functions are addressed by a single, extraordinarily powerful formula. Cellular Night Elixir offers the highest concentration of La Prairie's exclusive Cellular Complex combined with Advanced Platinum Complex, a unique combination of rare active ingredients.