Day & Night Travel Size Serum Duo - BenefitsGlass Skin Refining Serum: delivers luminous, smooth, and clear skin - like glass - with hyaluronic acid, niacinamide, and peach extractDay & Night Serum Duo is trial and travel-friendlyRetinal For All Renewing Serum: features patent-pending R-IQTM technology that reverses and prevents signs of aging - powerfully and gentlyResearch Results50% improvement in brightness**Retinal For All Renewing Serum - in 12 weeks or less:67% improved skin barrier**62% improvement in skin texture**96% saw increased hydration and improved dry patches*Glass Skin Refining Serum - in just 3 weeks:50% reduction in fine lines and wrinkles***Independent clinical results on the Glass Skin Refining Serum0% irritation**92% saw brighter, more luminous, and healthier skin with a radiant glow***Independent clinical results reflecting maximum benefits achieved; measured via instrumentation conducted by expert clinical graders on the Retinal For All Renewing Serum; independent clinical studies on retinaldehydeIncludesRetinal For All Renewing Serum (0.5 oz)Glass Skin Refining Serum (0.5 oz) - Day & Night Travel Size Serum Duo