eCosmetics is an authorized retailer of Haruharu Wonder. Soothing, Barrier-Plumping Essence. The haruharu wonder Black Rice Night Knight Retinol Serum is a highly effective yet gentle nighttime treatment that renews and protects the skin. With microencapsulated Retinol (0.08%) and a non-irritating, plant-based Retinol alternative, Bakuchiol (1%), this serum refines skin texture, softens the look of fine lines, brightens, and evens skin tone, while keeping pores clear.