But now, a team of Stanford University scientists has finally found an agent that can reversibly make skin transparent without damaging it. This agent was tartrazine, a popular yellow-orange food dye called FD&C Yellow 5 that is notably used for coloring Doritos.

Researchers have developed a method to turn the tissues of a live mouse transparent using a common food dye called tartrazine, which absorbs specific light wavelengths. This innovative technique modifies the refractive index of tissues,