1. Bic disposable underwear. Bic built its brand on the convenience of disposable products: razors, lighters and pens mostly. But its foray into underwear didn't fire - females didn't like the idea of buying intimate attire from a company that produces pens.
2. Earring Magic Ken. Changing Ken's image from classy tuxedos and suits to mesh T-shirt, purple leather vest, and earring was a bad idea. Pretty soon Ken was dubbed "Gay Ken" and Mattel swiftly discontinued production and recalled the doll.
3. RJ Reynolds' Smokeless Cigarettes. In 1988, when the perils of second-hand smoke were discovered, brands such as Camel decided to launch smokeless cigarettes. Reporter Magazine said the product "produced a smell and a flavour that left users retching". That, and the rumour it could be used to smoke crack cocaine, pretty much guaranteed failure.
4. Corfam Fake Leather. In the 1960s, DuPont began to promote Corfam, a synthetic leather substitute for women's shoes. But Corfam did not have the flexibility of leather and the shoes were hugely uncomfortable.
(Source: Daily Finance.com's Top 25 Biggest Product Flops of All Time)