The Sunday Riley Power Couple Duo includes two of the brand's best-selling products. Good Genes is a lactic acid treatment that exfoliates the skin, reduces the appearance of fine lines and wrinkles, and improves skin texture. Luna Sleeping Night Oil is a retinol-infused oil that helps to reduce the signs of aging and promote a more youthful complexion. Both products work together to reveal smoother, brighter, and more radiant skin.