To clean an oil painting safely at home, start by gently removing dust with a soft brush or microfiber cloth to avoid scratching or damaging the paint. For light dirt, use a slightly damp cloth with a mild solution of distilled water and gentle dish soap or an olive oil-based soap, applied carefully without soaking the painting. Avoid harsh chemicals, excessive water, abrasive materials, or strong rubbing, as these can cause permanent damage. If the painting has loose paint or shows severe deterioration, it's best to consult a professional conservator. A good practice is to work in small sections using cotton swabs dipped in the cleaning solution, rolling or gently wiping rather than scrubbing, and frequently replacing swabs to avoid spreading dirt. After cleaning, let the painting air dry completely before rehanging it. Regular, gentle cleaning helps preserve the painting's appearance and longevity.
