Discover Cell Renew Night Cream to help stimulate the skin's natural cell renewal process overnight. Scientific Discovery: The Restoring Power of Black Truffle and Fermented Black Tea The precious Black True can remain fully intact for 200 days in the wild. The rare natural wonder is renowned for its regenerating properties. Fermented Black Tea is commonly known as the "Tea of Immortality" in traditional Chinese medicine. Its concentrated fermentation gives it exceptional revitalising properties. L'Oréal Paris laboratories have formulated and combined these two active ingredients, rich in Polyphenols and Vitamin B, into a regenerating night cream that creates the optimal conditions to stimulate skin's natural cell renewal, and prolong its vitality as you sleep.