A linesmoothing antiaging night treatment What It Is La Prairie Skin Caviar Nighttime Oil is a linesmoothing overnight treatment featuring a luxurious oil texture that seals in moisture and active ingredients. Infused with caviar retinol, this overnight oil gently reduces the appearance of fine lines to visibly smooth the skin. The skin's barrier system is strengthened, giving you supple and hydrated skin. This nighttime oil is housed in a unique cobalt blue jar that is designed to keep the frag