Developed for experienced retinoid users, The INKEY List’s Advanced Retinoid Serum is a high-performance formula that minimises the visible signs of ageing. Powered by encapsulated retinaldehyde, the serum helps to smooth the look of fine lines and diminish noticeable dark spots, supporting a firmer, more unified effect. Sirtalice™, a complex know for granting a lifted, sculpted appearance, plus Symsitive® soothe and soften with each application, helping to nourish the skin barrier and protect from redness.