It’s not really an acid in the sense that it isn’t gonna eat through anything. It’s uhh… cell goop? Like I think “Goop” genuinely sums up its function. It forms a chunk of the extracellular matrix and kinda just lubricates or creates buffer space.

Edit: I think you use it for treating arthritis by injecting it into joints to replace the synovial fluid and for filler. They’re basically just giving their dicks lip filler.