DAY AND NIGHT SERUM DUO. Benefits: Day & Night Serum Duo is trial and travel-friendly. Glass Skin Refining Serum: delivers luminous, smooth, and clear skin - like glass - with hyaluronic acid, niacinamide, and peach extract. Retinal For All Renewing Serum: features patent-pending R-IQTM technology that reverses and prevents signs of aging - powerfully and gently. 100% Worry-Free: Peach & Lilys expertly crafted formulas deliver powerful results made gentle for all, with products that embrace the highest beauty standards that are also fragrance-free, alcohol-free, gluten-free, and non-toxic.. Research Results: Glass Skin Refining Serum - in just 3 weeks:. 96% saw increased hydration and improved dry patches*. 92% saw brighter, more luminous, and healthier skin with a radiant glow*. Retinal For All Renewing Serum - in 12 weeks or less:. 50% reduction in fine lines and wrinkles**. 50% improvement in brightness**. 62% improvement in skin texture**. 67% improved skin barrier**. 0% irritation**. *Independent clinical results on the Glass Skin Refining Serum. **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 retinaldehyde. Includes: Glass Skin Refining Serum (0.5 oz). Retinal For All Renewing Serum (0.5 oz).