[1] It is usually a highly-foamy mixture of surfactants with low skin irritation that consumers primarily use for washing glasses, plates, cutlery, and cooking utensils.
In addition to its primary use, dishwashing liquid is also used for various informal applications, like creating bubbles, clothes washing, and cleaning off wildlife affected by oil spills.
Before the invention of detergents in Germany during World War I,[4] consumers used washing soda (sodium carbonate) for dishwashing.
[8][9] Items that can be damaged by certain dishwashing liquids (especially with the use of hot water or when put into a dishwasher) include household silver, fine glassware, gold-leafed objects, disposable plastics, as well as objects made of brass, bronze, cast iron, pewter, tin, or wood.
[10] In 2010, the United States FDA raised health concerns over triclosan, an antibacterial substance used in some dish liquids.
[11] Elsewhere, triclosan has been found to create problems at wastewater treatment plants, whereby it can "sabotage some sludge-processing microbes and promote drug resistance in others.
Phosphates make dishes cleaner but can also cause harmful algal bloom as the wastewater goes back to the natural environment.
[16] Recent research has found that Blackcurrant seeds are helpful for lessening the effects of allergies, due to its hydrophobicity.
[1] Consumers handwash dishes in the absence of a dishwashing machine and when large "hard-to-clean" items are present, or through preference.
[5] Reader's Digest notes it may be used to kill ants and weeds, help spread water-borne fertilizer, and wash human hair.
[43] Euromonitor International collects market trends of many big brands like Procter and Gamble, Colgate-Palmolive, Henkel, Reckitt Benckiser, Unilever, Ajax.