Personal hygiene was the term for caring and maintaining the clean and healthy appearance of an individual. One who maintained dental hygiene was known as a hygienist. (DS9: "Paradise Lost")

According to a diagnostic analysis run by Doctor Beverly Crusher in 2364, bad personal hygiene could have a negative impact on chromosomes. (TNG: "When The Bough Breaks")

Unlike the Regressives, the mainstream Enarans used radioseptics as personal hygiene devices. Neelix, upon demonstrating these devices in 2372, pronounced the Enarans to be "very hygienic". (VOY: "Remember")

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