If your wooden kitchen cupboards are unfinished, it is recommended that you use an oil-based cabinet sealer. This protects the wood, but will also remove the raw wood look.
A clear coating on your kitchen cabinets will bring out the shine when the sun and other lighting reflects off of it. This appears to bring life to the wood.
In some cases, when using paint for your kitchen cupboards, there is a residue left behind. However, with a clear coat for cabinets, this will never happen.
You might want to know that all clear finishing coat products such as polyurethane, lacquer, stains, and oils may turn yellow over time if applied over white paint.