For decades, Fairy Liquid claimed one bottle of their dish-washing liquid lasts twice as long as their competitors, but there was no definite proof. In 2013,...View More
Persil, a big competitor of theirs said prove it & they actually did. The Advertising Standards Authority verified that their claim is indeed valid. To read more about it, check out this article: http://www.dailymail.co.uk/news/article-2424224/Fairy-liquid-really-does-twice-long-rival-brands-advertising-watchdog-rules.html The examples below depict two different types of comparisons Fairy uses. One that showcases a big stack of dishes & another showing two bottles. In each approach, they instantly & clearly get across their competitive advantage.