Old bottle with label ...how to preserve

[Lynette]

I have an old Extract of peppermint bottle (pic below) ...the label is very fragile and I am not sure how to preserve it.
Any ideas what to do with this ?

 

[capsoda]

Go tp an office supply and get some acid remover and spray document preserver. The come in spray cans and are made to preserve documents. Use the acid remover first then the preserver.