Beer shampoo
Japanese company Bandai plans to release a beer shampoo on December 1. The concept is simple, according to this Inventors’ Spot article: “Pour a beer over your head (or your friend’s head) and get dirty and clean at the same time.” According to the press release, the shampoo isn’t pressurized and won’t spray out of the bottle when opened; for maximum effect, you’ll need to add water and shake to get the beer shampoo foam to spray out.
Yet another brilliant idea. Alcoholics make ingenious inventors.

