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Engineers have designed a shampoo bottle that is good to the last drop

The days of turning the shampoo bottle upside down to squeeze out every last drop might soon be coming to an end, The New York Times reports. That’s because engineers have created a new plastic surface—a rough dusting of silica and a chemical coating—that repels sticky liquids like shampoo. This is the first time this kind of super oil-resistant surface has been applied to common plastics like polypropylene, an inexpensive material used in everything from shampoo bottles to packaged food, the authors write this week in Philosophical Transactions of the Royal Society A. The new, patent-pending technology will not only make every drop of shampoo count, but it could also have other practical applications in the future, from creating fingerprint-resistant phone screens to stain-resistant fabrics. 

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