What is the key ingredient in most nail polish removers?

The key ingredient in most nail polish removers is typically acetone or a non-acetone solvent. Acetone is a powerful solvent that effectively breaks down the components of nail polish, allowing for easy removal. Non-acetone removers, which often contain alternative solvents like ethyl acetate or isopropyl alcohol, are also common and are gentler on the nails and skin, making them a popular choice for those with sensitivities.

Understanding the active ingredients is crucial, as acetone works quickly but can be drying, whereas non-acetone options are milder and take a little longer to remove polish. This distinction helps nail technicians advise clients based on their needs, such as nail health, sensitivity, and the type of polish applied.