Why is distilled water preferred for use in facial steamers?

Distilled water is preferred for use in facial steamers primarily because it prevents mineral build-up on the heating element. Regular tap water contains various minerals and impurities which can accumulate over time and potentially damage the steamer. These deposits not only affect the efficiency of the device but can also lead to malfunction. Using distilled water, on the other hand, ensures that the steam produced is free of these minerals, which contributes to the longevity and proper functioning of the facial steamer, while also ensuring a cleaner vapor for client use.

The other options, while they may sound plausible, do not accurately reflect the primary reason why distilled water is used. Distilled water does not inherently enhance aromatherapy benefits nor does it provide additional hydration to the skin through its use in steamers; rather, it simply offers a purified steam. Additionally, while distilled water might not necessarily generate more steam than regular water, its primary advantage lies in preventing mineral accumulation.