A fast-absorbing formula by Estée Lauder, developed to cool and visibly calm the complexion. The Advanced Night Repair Rescue Solution Serum with 15% Bifidus Ferment lends soothing benefits to sensitive skin, while hydrating and nourishing to result in long-lasting radiance.Powered by 15% bifidus ferment, the serum protects against feelings of dryness and discomfort, supporting the skin’s moisture barrier for a healthy-looking finish. Yeast extract works to diminish the appearance of redness and discoloration, while Tripeptide-32, the brand’s patented ingredient, encourages a visibly renewed and refreshed result. Ultra-lightweight, apply the liquid serum after cleansing to get the most from subsequent steps.