Glo Scratches with the Glo

Hi there,
just noticed a 1mm scratch on the screen/outer layer.
In daylight theres a small shadow on the e-ink, whilst out of sunlight or with the light on it's not really noticeable, especially when reading, so it's not too bad.
If, however, more scratches occur, does anyone have any homemade remedies? Can we rub something into it? Can't imagine that would work (as they'll still be a break in the uniform layer) and there's the risk or damaging the screen around the scratch but you never know.

Thanks.