A careful painting does not hide defects: it reveals them. To achieve a perfectly even wall, the leveling compound constitutes a key step before any finish, whether it be paint, wallpaper, or a decorative covering. Choice of product, preparation of the surface, application in a thin layer, and sanding: each gesture counts. By respecting the correct method, you eliminate scratches, pores and minor irregularities to create a clean, durable and ready-to-decorate surface. The leveling compound is a finishing paste intended to correct minor irregularities of a wall or ceiling before painting, wallpapering, or applying a decorative covering. It fills microcracks, scratches, pores, and slight depressions to obtain a uniform surface. Use it on a clean, dry, and stable support, after having filled the major holes with an appropriate compound. It is particularly suitable for walls made of plaster, plasterboard, concrete, or old well-adhering paints. However, it does not replace a filling compound for deep defects or a treatment against humidity: the support must be properly dried before any application. Leveling compound, filling compound or finishing compound: each compound addresses a specific level of defect. The filling compound, thicker and more resistant, is used to fill holes, cracks, and depressions. The leveling compound is then applied in a thin layer to even out minor roughness and prepare the wall to receive its decoration. The finishing compound generally refers to a very fine product used to achieve a particularly smooth finish before painting. For a durable result, follow this order: fill, let dry, sand, then apply the leveling compound. A careful preparation limits visible marks after painting. To achieve an even wall, work on a clean, dry, and stable support. Remove the non-adherent paint parts, carefully dust, and previously fill the deep holes. Respect the drying time indicated by the manufacturer: a still wet or crumbly wall compromises the adhesion of the compound. Prepare a putty knife wide, a spatula, a tray, fine-grit sandpaper and a sanding block. Mix the powder compound according to the instructions, or stir the ready-to-use compound. Place a small amount on the knife, then spread it in a thin layer, from bottom to top or in cross passes. Tilt the blade slightly to remove excess and avoid over-thickness. After complete drying, sand gently with a fine-grit abrasive, 120 to 180, without pressing too hard in the same spot. Dust off before applying a second pass if necessary, then before painting.