This specialized set by Clinique is formulated to deliver potent, targeted skincare benefits through two distinct booster treatments. It features a 'Daily' component concentrated with Pure Vitamin C 10% for brightening and antioxidant protection during the day, and an 'Overnight' component featuring Vitamin A (Retinol) to support skin renewal while you sleep. These boosters are designed to be mixed with your regular moisturizer (sold separately) to transform it into a high-performance treatment tailored to address uneven skin tone, texture, and signs of aging. Incorporating this duo into your routine ensures a comprehensive approach to maximizing skin vitality, supporting a clearer, more radiant complexion over time.