it doesn't degrade I have a few bottles and it works fineI've got some Loctite thread lock from 1983 and it still does exactly what it says on the tin.
It's one of many which were binned periodically according to the 'use by' date imposed on incoming batches by our QA dept.
Mind you, being originally used to retain critical assemblies in civil aviation applications, I don't have a problem with that approach.....