Clear Conductive Nail Polish Developed for Touchscreens
Researchers at Centenary College of Louisiana are developing a clear nail polish designed to make long fingernails compatible with capacitive touchscreens. The team, led by undergraduate Manasi Desai and supervisor Joshua Lawrence, presented their initial findings at the American Chemical Society (ACS) Spring 2026 meeting. This innovative clear polish aims to bridge the gap between fashion and modern technology.
The Challenge: Fingernails vs. Touchscreens
Most modern touchscreens operate by detecting changes in an electric field when a conductive material, like a fingertip, touches the screen. Nonconductive materials, such as fingernails, do not register a touch. Previous attempts to create conductive nail polish involved incorporating carbon nanotubes or metallic particles, which posed manufacturing hazards and limited polish colors due to their dark or metallic appearance.
A New, Clear Approach
Desai and Lawrence aimed to develop a clear, nontoxic formula. Their innovative approach involved testing 13 commercial clear-coat polishes with over 50 different additives.
The most promising combinations included forms of taurine, an organic compound, and ethanolamine, another simple organic molecule.
Initial Findings and Breakthroughs
While ethanolamine offered conductivity, it presented some toxicity concerns and evaporated quickly, limiting the polish's effectiveness to a few hours. A modified taurine formula was nontoxic but slightly opaque. Crucially, when combined, these additives created a formula that registered touches on a smartphone, indicating a promising initial step.
The Science Behind the Polish
The researchers hypothesize that their polish achieves conductivity through acid-base chemistry, where the electric field causes protons to move between molecules, altering the polish's capacitance just enough for the screen to register a touch. This mechanism uniquely differs from previous approaches that relied on inherently conductive materials.
Next Steps and Recognition
Further research is required to improve the consistency and longevity of the polish, as well as to find a truly nontoxic conductive compound. The research was funded by Centenary College of Louisiana, the Albert Sklar Family, and the Sklar Chair in Chemistry, and a provisional patent has been submitted.