La Roche-Posay Pure Vitamin C12 Serum: Apply 3-4 drops in the morning to the face, neck and décolleté, after cleansing. Follow with a moisturizer and always apply daily sunscreen. La Roche-Posay Hyalu B5 Eye Serum: Apply 1 to 2 drops from the pipette and remove any excess. Massage into the eye contour area with the applicator. La Roche-Posay Hyalu B5 Serum: Apply morning and evening to the face and neck.