Which of the following is NOT a method of cleansing the skin?

Astringent lotion is primarily used to reduce oiliness and tighten the skin but is not traditionally classified as a method of cleansing. While it can remove dirt and excess oil to some extent, its main function is more about toning and refining the skin rather than effectively cleansing it. In contrast, foaming gels, cream cleansers, and water are all intended for the primary purpose of cleansing. Foaming gels and cream cleansers are formulated to remove dirt, makeup, and impurities from the skin's surface, while water serves as a universal solvent used in conjunction with other cleansing agents. Thus, astringent lotion does not fit the category of cleansing methods the same way the other options do.