the.com/lather

The foam that convinces you soap is working harder than it actually is.

means A frothy buildup of soap bubbles and water, or, by extension, a state of nervous sweat or agitation.

from Lather traces back to Old English 'leaþor,' meaning soap foam or washing soda, and further back to a Proto-Germanic root tied to washing and cleansing. The same ancient family of words gave rise to 'lave,' meaning to wash — so lather has always been about suds, not substance. The figurative sense, 'worked into a lather,' meaning flustered or sweaty with agitation, rode in on horseback: a hard-ridden horse foams at the mouth and flanks, and by the 1800s people borrowed that same frothy panic to describe their own overheated nerves.

real job
traps dirt in bubbles, barely cleans by itself
marketing trick
added foaming agents just to feel luxurious
shampoo myth
rinse repeat label was invented to sell more shampoo
horse origin
first meant sweat foam on a horse
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