Do not dust your painting if the paint is chipping or cracking. [1] X Research source Do not use conventional feather dusters or rough cloths to prevent scratches. Don’t use water, sprays, or cleaners that may interact with the varnish or paint. You can also use a soft microfiber cloth that’s static-free if you don’t have a brush. [2] X Expert Source Kelly MedfordProfessional Artist Expert Interview. 2 July 2019.

Make sure that the painting has air circulation. Store it in an area that is not prone to bugs, animals, or dust.

To find a licensed conservator, visit the website for the American Institute for Conservation of Historic and Artistic Works, or the AIC. [4] X Research source

Virtually all oil paintings are varnished, and over time, need to be re-varnished.

If a painting is too large for you to move yourself, have a friend help. Never lean your painting against a sharp object, or something that could scratch it.

The natural oils in your hands can leave fingerprints and damage a painting’s value. [10] X Research source

Poking the backside of a canvass can create a bulge that will create spider-web cracks along the surface of your art. [12] X Research source

You can buy framing keys at most art stores. You can have your art re-framed by a conservator, with brass mending plates and screws, for extra security and longevity. [14] X Research source

Exposing your paintings to heat could create cracking and blistering. Keep the temperature at 70-75 degrees Fahrenheit (21-24 degrees Celsius). [15] X Research source

Damp areas could cause mold to grow on your art which will need to be removed by a professional. Keep the humidity level between 40% and 60%. [16] X Research source Purchasing a dehumidifier can help you regulate humidity in your house.

Certain dyes and colorants used in oil paint will fade and dull over time, if exposed to UV lights. [18] X Trustworthy Source The Smithsonian Institution Leading group of museums and research institution funded by the U. S. government Go to source

Make sure to use a tape measure and level when hanging art. Never drill directly into the frame unless you have frame screws. Do not use nails with your expensive art.

Museum grade glass and certain plexiglass also come with UV filtering, to prevent the painting from being damaged from prolonged exposure to sunlight. [20] X Research source Regular glass is heavier and easier to break, but plexiglass is a polymer that may interact with your oil painting over a long period of time.