Lather, rinse, repeat

Lather, rinse, repeat (sometimes wash, rinse, repeat) is an idiom roughly quoting the instructions found on many brands of shampoo. It is also used as a humorous way of pointing out that such instructions, if taken literally, would result in an endless loop of repeating the same steps, at least until one runs out of shampoo. It is also a sarcastic metaphor for following instructions or procedures slavishly without critical thought.[1]

It is known as the shampoo algorithm, and is a classic example of an algorithm in introductory computer science classes.[2]

In Benjamin Cheever's novel The Plagiarist, a fictional advertising executive increases the sales of his client's shampoo by adding the word "repeat" to its instructions.[3]

See also

References
  1. Author, Toni Marie LaGree-. "Lather, Rinse, Repeat: A Content Marketer's Exploration". Toni. live. Retrieved 2020-03-20.
  2. Tammy Bailey (2004-05-17). "Algorithm Design" (PDF). Archived from the original (PDF) on 2004-11-17. Retrieved 2017-02-02.
  3. Goldstein, Lauren (1999-10-11). "Lather, Rinse, Repeat: Hygiene Tip or Marketing Ploy?". Fortune Magazine. Retrieved 2017-02-02.


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