In the world of Sunday Riley, there are two bestselling formulas that seem to be a match made in skincare heaven: Good Genes Glycolic Acid Treatment and Luna Sleeping Night Oil. The Power Couple Total Transformation Kit is a celebration of everything that makes both of these products so crucial in your beauty routine; while Good Genes works throughout the night to deliver luminous, youthful results by morning, Luna brightens the appearance of dark spots for a more even-looking complexion.