The INCI list for the Kate Somerville KateCeuticals Resurfacing Overnight Peel (£76) includes gold standard skin-care ingredient after gold standard skin-care ingredient, including glycolic acid, retinol, niacinamide, ceramides, and vitamin E. Together, they promise to help leave your complexion smoother and brighter, by improving skin texture, fading dark spots, and softening fine lines and wrinkles.