prequel retinal renew 0.1% retinaldehyde gel retinal retinol treatment that helps with fine lines, uneven skin texture, enlarged pores, dullness and discoloration. contains 0.1% retinaldehyde to encourage skin renewal, plus ectoin and cica to help soothe the skin and support its moisture barrier. a great addition to a nighttime skincare routine for smoother, more even-looking skin. brand new, unopened & unused. retails for $29.