SkinCeuticals A.G.E. Interrupter has the following features: Mature skin treatment to help reverse erosion of elasticity and firmness caused by advanced glycation end products. Formulated with 4% blueberry extract, 30% ProxylaneTM and 0.2% phytosphingosine to help prevent the glycation process and correct severe signs of aging in mature skin. Blueberry extract slows down the process of advanced glycation end-product (A.G.E.) formation, preventing collagen and elastin fibers from becoming rigid. Proxylane stimulates GAG synthesis, restoring water and nutrients to the dermal epidermal junction. Phytosphingosine helps protect the skin’s barrier to alleviate discomfort associated with dry, aging skin.