Turn back the clock overnight. La Prairie's scientists have combined the breakthrough brilliance of Cellular Power Infusion with time-released Retinol, the most effective de-aging ingredient, and a revitalizing boost of oxygen to balance and resurface your skin each night. Why night? Cellular Power Charge Night takes advantage of your skin's natural resting state to perform necessary recovery functions. Wrinkles are repaired, signs of aging are erased, cell turnover is accelerated and oxygen is boosted, all of which means you will wake up to younger looking skin.