Many nail polishes do indeed contain butanone, also known as Methyl Ethyl Ketone (MEK, CAS 78-93-3). Butanone is a common ingredient in nail polish due to its solvent properties. Its primary function is to dissolve other components, giving the nail polish a smooth and even texture.
Butanone (MEK) plays a vital role in nail polish, aiding in evenly applying the nail polish, enhancing its adhesion to the nails, and allowing it to dry quickly. Moreover, Butanone also imparts a glossy appearance to the nail polish.
However, due to certain potential health problems, some nail polish manufacturers have started producing so-called "3-Free" or "5-Free" nail polishes. These labels indicate that the product does not contain certain potentially harmful ingredients, one of which is butanone (CAS 78-93-3).
Note that if butanone (Butanone or MEK) comes into contact with the skin or eyes, it may cause irritation. If a large amount of butanone (
CAS 78-93-3) smoke is inhaled, it may pose a threat to health. Therefore, it is recommended to always use nail polish in a well-ventilated area.