Will solvents damage my oil painting?

Whilst aggressive solvents such as general-purpose white spirit will likely damage your colour (especially if used in great quantities) more refined solvents such as Turpentine and Sansodor will not affect your colour, and can be used alongside mediums to increase flow or improve matting and create glazes. Some artists also use a mixture of these solvents and oils to displace colour and create drips in their paintings.