Since our PhD, we aim to rethink the transposition of universal design (UD) in museums for narratives, specifically on labels. We have conceptualised a model of universal label, adding inclusive and communicative writing: inclusive, by using universal design merging on the same device several forms of communication (sign language, Braille, easy to read); communicative, because it explains and learns how citizens perceived as disabled communicate. UD writing could initiate and encourage communication. In this paper, we applied our reflections on UD writing to the label of The Mona Lisa at the Louvre Museum.