The scientists developed a self-drying, skin-conforming, ultrathin, electronic scalp temporary tattoo ... make ultrathin electronic tattoos directly on human skin—hairs and all.

These tattoos contain sensors that can track electrical activity in the body. The team designed a liquid ink made of conductive polymers. The ink can flow through hair to reach the scalp and ...

Following is a transcript of the video. Travis Hunter: Scalp camouflage is basically creating the illusion of density by adding thousands of dots of little pigments to the scalp, reducing the ...

The ink flows effortlessly through hair to reach the scalp, where it dries into a thin, flexible film. Once in place, the tattoo acts as a sensor, picking up brain signals with precision.