I don't own any empreinte pieces, so not sure I should even comment. You're sure it's the actual glazing though? I have a canvas 6 key holder and it's edges from time to time develop this tiny skin-like peeling bits (I don't even know how to describe it, lol). They come off easily if rubbed gently with tissue or cloth. Mine seem to be like a glue residue or something
but then again mine's not leather...
*The pics below of before and after cleaning with cloth*

*The pics below of before and after cleaning with cloth*