What is the primary ingredient in nail polish remover?

The primary ingredient in nail polish remover is typically acetone or non-acetone solvents. Acetone is a powerful solvent that effectively breaks down the compounds in nail polish, making it easier to remove the polish from the nails. Non-acetone solvents, which can be made from gentler ingredients, are often used as alternatives because they tend to be less drying to the nails and skin. Many brands of nail polish remover contain a combination of these solvents to balance effectiveness and gentleness.

The other choices do not serve as primary ingredients in nail polish remover. Ethyl alcohol, while a common disinfectant and can remove some types of polish in a pinch, is not as effective as acetone in breaking down nail polish. Hydrogen peroxide is primarily used for its bleaching and antiseptic properties and does not have the solvent capabilities needed for effective nail polish removal. Ammonia is typically used in cleaning agents and can be harsh on nails and skin, making it unsuitable as an ingredient in nail polish remover.