The US was the only country to prohibit lighters on airplanes. That ban will be lifted on August 4. However, it’s still far too dangerous to bring more than 3 ounces of shampoo in your carry-on throughout most of the world. Everyone knows liquids explode more than lighters do!
And for anyone else who thinks the TSA ban on liquids is the dumbest idea ever, I suggest you watch the SNL skit on TSA Training.