For best results, proper preparation is key. Ensure all surfaces are clean, dry, and free from dust, dirt, grease, or loose material. Fill any cracks or holes with a suitable filler, then sand smooth. For previously painted glossy surfaces, lightly sand to create a key. If painting new plaster or absorbent surfaces, apply a suitable primer or a diluted first coat of this paint (Info needed: specific dilution ratio). This paint is compatible with interior walls and interior wood. Do not use this paint on exterior surfaces or in areas with constant high humidity. For care, gently clean painted surfaces with a soft, damp cloth if necessary. Avoid harsh abrasive cleaners or scrubbing, as this can damage the flat matt finish. Address spills or marks promptly.