Nothing goes to waste
Sticky hair-washing elixirs are the reason why it’s so hard to get every last drop out of the bottle. The shampoo issue is a first-world problem, but even if you buy cheap shampoo from the drugstore, wasting your money by throwing out a bottle that has enough left for a few more washes is irritating.
Geting the last drop of your shampoo, conditioner, or body wash takes a dedicated effort. You can put it upside down, add water to the bottle and fight with it for a while, and then you’ll probably give up and throw it away. To avoid that problem, someone created an intelligent shower caddy where you can tip your bottles upside down. We love it.