Unopened & unused - sealed and in box Genuine Medik8 product 4ml Advanced retinal (vitamin A) night serum designed to help improve skin texture, reduce the appearance of fine lines and support a smoother, brighter complexion. Crystal Retinal 6 offers a mid-strength retinal level ideal for those already familiar with vitamin A skincare. Helps promote clearer, more youthful-looking skin as part of an evening routine.
