Washable ink composition

Today’s cyclodextrin is another industrial application, now from the material sciences: a washable ink!
The cyclodextrin is said to be included to improve the washability and vividness of the shades of a washable aqueous ink composition. According to the patent, in this particular application HPBCD is used, yet I think that would be more composition dependent.

Link to patent: https://worldwide.espacenet.com/publicationDetails/claims?CC=US&NR=2023383132A1&KC=A1&FT=D&ND=&date=20231130&DB=EPODOC&locale=en_EP