Brighten the look of dark spots and discolouration in just 7 days* with Medik8's professional strength peptide serum.Oxy-R Peptides delivers clinically proven action on all skin tones for visibly brighter, more even skin with fewer dark spots and post-imperfection marks. Unlike others, Medik8's patented, click-activated stabilisation system ensures unmatched peptide potency for profound visible results - from the first drop until the very last.