It works by absorbing all of the UV-B light, which blocks its passage into the skin layer
Takasu N, Yamada T, Takasu M, Komiya I, Nagasawa Y, Asawa T, et al
Beyond their well-established benefits in managing type 2 diabetes mellitus (T2DM) and promoting weight reduction, emerging evidence suggests that GLP-1 RAs may also offer neuroprotective, anti-inflammatory, and cardiovascular protective effects 4,5,6,7
However, I feel strongly that people need to be informed about both the risks, benefits, and limitations of this (or any) medication that they use, which is part of the informed consent process between you and the prescribing professional