One may come across many advices about cleaning an oil painting, but those tips must come with a major disclaimer. More than other types of rough and ready projects on cleaning oil paintings must really be trusted to professional conservators. Anyhow, if your oil painting is not really old, not terribly valuable, or not too important, there are other potential ways to make it appear good and cleaner yourself. Furthermore altering true antiques more or less forever decreases their value, whether or not they appear better to you.
If it seems that your oil painting reproduction is little older, evaluate whether the paint is in good condition but the varnish has become older. In this case, try applying a gentle solvent known as conservation liquid. Some of the art supply stores may sell an ?emulsion? intended to clean and remove varnish. There is always a chance that the solvent would as well harm or remove the oil paint. If you are ready to risk this possibility, pat the emulsion with a cotton swab quite delicately. Try spot testing one corner before moving on to the whole canvas. Work in an area where you find adequate ventilation.
For any of the recent oil paintings, your trouble is more probable a loudening of dust, smoke, pet hair, dander, and other bacterial or fungal growth. In this case, ensure none of the paint is set to come off the canvas or board, sense that it doesn't display any cracks or flakes. Then you could vigilantly dust the surface with a very soft, dry bristle brush, like a baby toothbrush or shaving cream brush.
When the surface is steamy, dirty, or oily, you might desire to take the cleaning a step further and in fact uses a mild detergent solution. Again, in general speaking, oil and water must never mix, as moisture could be damage both the canvas and the impasto. Proceeding with care, use brand original cotton cloths dipped in a mixture of dish soap and only the warm water. Lightly blot the surface, but do not rub, wipe, or rub at the oil painting. At no point you should sink any part of the painting, nor permit so much moisture that it drips or pools.
