The Shampoo Racket

When you buy shampoo and the bottle says, maybe, three hundred milliliters, that's never what you're getting. Oh, yes, it's in the bottle. But that's where it's going to stay. You're about to wash your hair and you haven't been shopping. There's still some shampoo in the bottle that you've been squeezing and shaking. You haven't finished it, there's enough for another wash. So, confident you can shake your way to clean hair, you turn the bottle upside down and shake. And shake. And shake some more. After five minutes, a thin, slow stream of shampoo pours into your hand. There's more in the bottle, but there's no way you can get it out. You look at the quantity. There might be enough to wash a doll's hair, but not the wet, cold mop on your head. Or you're washing all the dishes and cookware from lunch and you eye the dishwashing detergent. It's a bottle of nine hundred milliliters you bought a month ago and there'...