What it is: A clinically proven fast-acting skin-firming treatment serum that reduces the appearance of medium or deep wrinkles and signs of hormonal aging. What it is formulated to do: Age-Diffusing Serum is clinically proven to increase firmness while reducing the appearance of wrinkles and easing signs of hormonal aging. Youth building peptides support natural collagen and decrease the appearance of even deep wrinkles, phytoestrogens including iris root extract improve elasticity and deliver essential moisture, and shiitake mushroom extract firms and lifts the appearance of skin for a more youthful-looking complexion. Age-Diffusing Serum is recommended as a step two treatment for day and night in any Murad Resurgence regimen.