Tattoos are personal—stories etched into skin, snapshots of identity, reminders of who we were or who we’re becoming. But sometimes, life asks us to hide them: work events, family dynamics, weddings, ...

We may receive a portion of sales if you purchase a product through a link in this article. Covering up a tattoo is an art — one that typically requires professional makeup artists to mix up custom ...

In Neal Stephenson’s sci-fi novel The Diamond Age, body art has evolved into “constantly shifting mediatronic tattoos”—in-skin displays powered by nanotech robopigments. In the 25 years since the ...

A person applying the color-changing tattoo, and a color chart for the medical-alerting tattoo. Ali Yetisen et al. Soon, tattoos won’t just show how cool you are — they’ll also show how healthy you ...