 Deep eutectic solvents, DESs, can be used to improve the absorption of proteins after subcutaneous injection. This novel approach has been shown to increase the absorption of monoclonal antibodies, MABS, by up to 200%, and insulin by up to three times faster than the current gold standard. DESs reduce the interactions between proteins and the subcutaneous matrix, particularly collagen, resulting in improved absorption. These findings suggest that DESs could provide a general solution for improving protein absorption after subcutaneous injections. This article was authored by Alexander M. Correree, J. Young Kim, Michael Dunn, and others.