Which substance would you use to effectively remove a nicotine stain?

Acetone is effective for removing nicotine stains largely due to its powerful solvent properties. It can break down and dissolve the oils and residues left behind from nicotine, making it easier to clean surfaces that have been tarnished by smoke or tobacco use. Its volatile nature allows it to evaporate quickly, which also prevents the potential for water damage that could arise from some other cleaning agents.

While other substances like isopropyl alcohol, vinegar, and hydrogen peroxide may have cleaning properties, they are not as specifically effective on nicotine stains. Isopropyl alcohol can be useful for disinfecting and cleaning surfaces, but may not adequately dissolve tougher substances like nicotine. Vinegar is often helpful in cutting through grime and odors but may not have the same efficacy against the oil-based residue of nicotine. Hydrogen peroxide is good for stain removal and disinfection, but it is not as effective as acetone for nicotine, particularly on hard, non-porous surfaces. Thus, acetone is the preferred choice for effectively tackling nicotine stains.