Maximum efficacy. Maximum versatility. Each Discovery Duo contains both of our groundbreaking skincare formulas, The Cream and The Rich Cream, for easy mixing-and-matching according to your routine. Use The Cream- an ultra-lightweight, instant hydrator – in the mornings and in warmer climates. The Rich Cream – a highly concentrated, deeply moisturizing cream – helps combat dryness in the evening and in cold or inclement weather.