Medik8 CSA Kit Retinal EditionInspired by the CSA philosophy, the Medik8 CSA Kit Retinal Edition brings together four targeted formulas to visibly brighten, smooth and refine the skin. This set is ideal for those ready to step up their results using next generation vitamin A, while still remaining suitable for retinol beginners and sensitive skin types. The kit works across the full day and night cycle. Skin is gently exfoliated and cleansed, defended from environmental stressors