In this study, the effects of water-based color-protective barriers on the color change of wooden veneers of various tree species were investigated. Wooden veneers of castanea, eucalyptus, and scots pine species - which are widely used industrially - were selected for this purpose. The wood veneers were then divided into two groups and two separate top surface prescriptions were applied to each group. In the first group, only varnish was applied. On the second group, a water-based color-protecting barrier and varnish application was used, and a total of 6 variation test samples were prepared, with and without water color-protecting barriers applied to each tree type. Test samples were tested on both UVA and UVB lamps in the QUV aging device. It has been determined that water-based color-protective barriers do not show a significant color change in the applied parts, and that the veneer experiences discoloration in the areas not subjected to color-protective barriers. These results can be regarded as an industrially significant result, helping to overcome problems associated with the weathering of varnished surfaces.