What is a common precaution to take when using a facial steamer?

Using distilled water in a facial steamer is crucial because it helps prevent mineral buildup in the machine. Regular tap water contains minerals and impurities that can clog the steamer, leading to malfunction over time, and can also cause skin irritation when the steam is produced. Distilled water, being free from these contaminants, ensures that the steam generated is pure and safe for the skin, which is especially important during skincare treatments.

When considering other precautions, while avoiding the steamer on sensitive skin is valid, it does not provide the same practical maintenance benefit as using distilled water. Additionally, placing the steamer on the floor for stability is not a common practice, as it is more effective when placed on a stable, flat surface at a height convenient for the client. Increasing the temperature does not necessarily yield better results and could lead to burns or discomfort for the client. Therefore, using distilled water stands out as a fundamental precaution for both the effectiveness of the machine and the safety of the user.