Medik8s highest strength vitamin a in a light fast absorbing serum for easy all over facial application helps to rejuvenate the skin at night by stimulating the production of collagen to improve the appearance of fine lines wrinkles and dark spots skin roughness and hyperpigmentation are also improved leading to a more youthful skin appearance skin is left feeling soft and hydrated 1 strength retinol is suitable for those who have already been using vitamin a as part of their regime an