Can anything be done with really faded picture

This is marriage photo of my great grandparents Frederick and Mary Dixon nee Bimson. They married in 1916 Carlisle.
The rear of the picture says: If found Please forward on to Mrs F Dixon, 20 Millom Terrace, Currock, Carlisle, Cumberland, Blighty.
Looks like it was taken overseas by Frederick. He came back from WW1

Thank you.