WHAT IS DOUBLE CLEANSING? It is a two-step method that allows you to deeply cleanse the skin, perfect for chi who wish to effectively remove sebum, impurities, and make-up (yes, even the most resistant ones), while fully respecting the epidermis.· The first phase involves using an oil-based product, which works against sebum and impurities by "affinity".· The second phase involves using a product that works by "contrast" (foaming agents with surfactants or accessori that can replicate their action), to remove any residue from the first phase.· DOUBLE CLEANSING WITH DENSE OIL AND FOAM is una cleansing suitable for any skin type, even the most delicate. It ensures una thorough and complete cleansing even in the presence of make-up.· DOUBLE CLEANSING WITH DENSE OIL AND MICROFIBER CLOTH is the ideal cleansing for combination, impure, or uneven-textured skin, which also needs una effective and non-aggressive micro-exfoliation.