Truderma Duo Age Renewal Serum is a 2-in-1 anti-ageing face serum system with a powerful Day Defence and Night Intense formula. The daytime serum uses Siliphos, Brightenyl, ceramide complex and rosehip oil to protect against environmental damage, boost collagen and brighten dull, uneven skin. At night, a renewing blend of retinol, bifida ferment lysate, hyaluronic acid and Revivyl smooths fine lines, improves elasticity and fades blemishes and dark spots. Together, these lightweight serums restore the skin barrier, deliver deep hydration and reveal firm, radiant, younger-looking skin.