Do oil paintings darken over time?

Yes, oil paintings darken over time. As oil paint is made of pigment particles, the range of substances that are used as pigment in oil paint can render certain colors susceptible to aging. Slowing the aging process for an oil painting involves storing your painting properly and keeping the work out of exposed sunlight. Temperature control and humidity are also important in preserving the life of an oil painting and slowing the aging process.

To maintain oil paintings that you purchased for your home, experts suggest that you keep them out of direct sunlight. Prolonged exposure to the sunlight coming in from a window can fade the colors in your painting. Do not hang your oil painting near a heat source or where it can get wet (bathrooms and kitchens are not safe for your oil painting).

You may wish to dust your oil painting so that layers of dust don’t begin to gather on its surface. This should only be considered to remove loose dust. Never spray any chemical substance on your oil painting. Do not use a damp cloth to dust your oil painting. (Again, your painting should not be exposed to moisture.)

To remove loose dust, use a soft brush that measures approximately one to two inches wide with natural-hair bristles. Do not use a dust cloth or a feather duster, as those items may catch or leave threads or feathers behind. Do not apply pressure or dust your painting for an extended period of time.

If you think that your oil painting is considerably dirty or believe that other issues may be at work, experts strongly suggest that you consult with a professional conservator.

Read about how to arrange your wall art and find oil paintings for sale on 1stDibs.