I've read lots and lots of pages saying that selenium toning will bleach the image, even after fixing... Some were even doubting it was doing any toning at all... I could not find the components to make Gold toner easily, and platinium/paladium will be for when I have the process sorted out, later on.. So I was thinking of using just Agfa Sistan as a preservative to prevent too quick a degradation. Is it a good idea with Vandykes ? Any alternative ? Any suggestion on how/when to apply the Sistan ? Any gotchas ?