Balancing clinical-grade retinal with hydrating ingredients, the Kate Somerville Mega-A Skin Transforming Serum helps to smooth the look of fine lines without the risk of dryness often associated with potent actives. Gentle enough for daily use, the serum blends retinal (up to 11x more effective than retinol) with hyaluronic acid and squalane to deliver a burst of hydration that improves visible suppleness and elasticity. Whether you are a retinoid beginner or long-time user, the serum is suitable for all skin types including sensitive skin.