What do nail bleachers and lighteners commonly contain?

Nail bleachers and lighteners typically contain hydrogen peroxide due to its properties as a bleaching agent. Hydrogen peroxide works effectively to lighten the nails by breaking down melanin, the pigment responsible for color in the nails. This makes it a popular choice in nail products intended for lightening or brightening.

Other substances, while they may have applications in various chemical processes or as household cleaning agents, do not serve the same purpose as hydrogen peroxide in nail care products. For instance, ammonia is commonly used for its cleaning properties, but it does not possess the same bleaching capabilities as hydrogen peroxide and is more associated with harsh odors and potential skin irritation. Chlorine is often used in disinfectants and cleaning products but would not be suitable for nail applications due to its abrasive nature. Lastly, acetic acid, known for its use in vinegar and as a solvent, does not have bleaching properties and is more associated with pH adjustment than nail lightening.

Thus, hydrogen peroxide is the most effective and commonly used agent in nail bleachers and lighteners, highlighting its specific role and effectiveness in cosmetic nail treatments.