To effectively remove acrylic nails, which substance should be used?

Using acetone to remove acrylic nails is the most effective method due to its properties as a strong solvent. Acrylic nails are bonded with a polymer that requires a powerful solvent to break down the chemical bonds effectively. Acetone penetrates the layers of the acrylic, softening and dissolving them, which allows for easier removal without damaging the natural nail underneath when used correctly.

Other substances mentioned in the options are not suitable for this procedure. Alcohol, for example, does not have the same solvent properties as acetone, making it ineffective in breaking down acrylic material. A buffer solution is typically used to smooth and shape nails but lacks the necessary solvent action to remove acrylic nails. Cuticle oil is used for moisturizing and nourishing the nail and surrounding skin, but it does not have any properties for dissolving acrylics. Thus, acetone is the best choice for safely and effectively removing acrylic nails.