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Problem - Yellowing
Development of a yellow tinge in aging paint. It is most noticeable in the dried surfaces of white paint or clear varnish.

Possible causes

  • Natural oxidation of alkyd paints or varnish.
  • Lack of light, such as behind pictures.
  • The effect of heat (radiators, ceiling heating ducts, etc.) on alkyd paints or varnish.


Acrylate paints and varnishes do not yellow. Alkyd paints and varnishes on warm surfaces that lack exposure to sunlight can yellow easily. All alkyd varnishes have a yellow tone. The yellowing process can be slowed down, but not prevented entirely.