If you're new to retinoids and/or have more sensitive skin, try the "retinal sandwich" method, a process that helps reduce potential for irritation by layering moisturizing products like Half & Half Fluid Moisturizer before and after a retinoid like Retinal Renew. Mature skin. Skincare. Nighttime skincare. Prequel retinol retinal moisturizer sensitive skin LTKBeauty LTKOver40