Hilary Duff knows a thing or two about maintaining glowing skin under bright lights, and one of the products she swears by is the iS CLINICAL Active Peel System. The two-step exfoliating treatment has become a go-to for achieving smoother, brighter-looking skin, helping to sweep away dull buildup while boosting radiance. During a recent radio interview, the Y2K queen shared that exfoliation with the iS CLINICAL Active Peel System plays a key role in maintaining her glowy complexion, especially while on tour and wearing heavy makeup.