Leahlani Skincare Aqua A Retinoid Renewing Serum revitalizes and tones. This powerful serum blends skin actives and botanicals to bring youthful vitality. The Aqua A formula contains low-irritation HPR retinoids, proven to be effective yet non-sensitizing, to promote cellular turnover. This smoothing of fine lines and wrinkles results in a glow from within.