March 25, 2026, 3:51 pm | Read time: 2 minutes
Smartphones are a staple in everyday life for many. Sending messages, looking up information, or scrolling through apps often happens on the side. However, those with long or artificial nails quickly encounter a problem: The screen often doesn’t respond to touches with the nail tip. This is where a new development comes in, promising a simple solution.
A research team has developed a special nail polish designed to make fingernails usable on touchscreens. The project is led by researcher Manasi Desai and her professor Joshua Lawrence from Centenary College of Louisiana. The researchers presented their findings at a meeting of the American Chemical Society. They aimed to create a coating that can be applied like regular clear polish while generating an electrical reaction typically produced by the skin of a finger. This allows fingernails to be used directly for input without additional tools.
Why Displays Don’t Respond
The issue primarily affects capacitive touchscreens. This technology responds to changes in an electric field when a conductive object touches the surface. With long fingernails or very dry skin, the conductivity is often insufficient for the device to recognize the touch. The result: Inputs work unreliably. The new polish is intended to compensate for this lack of conductivity.
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For the development, the researchers mixed various additives into transparent nail polish. Ethanolamine and taurine were among those tested. Both substances made the polish conductive enough to activate a touchscreen. While ethanolamine is considered potentially harmful to health, taurine proved to be much less problematic. Taurine naturally occurs in the human body and is also known from dietary supplements.
The Right Mixture Is Crucial
In addition to the ingredients, the mixing ratio played an important role. The team examined how well the polish adheres to the nail and how reliably displays respond to it. Key factors included not only conductivity but also how evenly the coating can be applied and how long it lasts. Only after several adjustments did they develop a formula that allows stable input activation.
Currently, it remains an experimental solution. The effect lasts only a limited time, so work continues on a more stable version. The researchers do not mention a potential market launch date in the press release. If the idea catches on, the special nail polish could become a practical aid in everyday life.