Final answer:
Applying petroleum-based deodorant to porous wood can cause the wood tones to darken due to absorption and possible reactions with wood tannins. The appearance change depends on the wood type and its finish, and professional advice should be considered.
Step-by-step explanation:
Applying a petroleum-based deodorant to a porous wood surface may cause some wood tones to darken. The porous nature of wood allows for absorption of various substances, which can lead to a change in appearance. Petroleum products often contain oils and other components that can penetrate the surface of the wood, resulting in a darker color as they fill the pores and possibly react with the natural tannins in the wood.
It is important to consider the type of wood and its finish before using any kind of substance on it. For delicate or valuable wood items, it is always best to consult a professional before applying substances that can alter their appearance and potentially damage the material.