Estée Lauder Advanced Night Repair Rescue Solution Serum with 15% Bifidus Ferment is a lightweight, fast-absorbing formula engineered to soothe and hydrate irritated or redness-prone skin. Enriched with a high concentration of bifidus ferment, it reinforces the skin’s moisture barrier and visibly calms complexion distress. With added yeast extract to reduce redness and Tripeptide‑32 to renew skin texture, this serum delivers a fresh, radiant finish and supports long-lasting skin resilience. Ideal for use morning and evening, it’s perfect as a layering step before your serum or night cream.