Selective lightening of Print - what to use?

Hi all,

I saw a friend use very diluted potassium ferricyanide with brush to lighten a part of the print.

I have Farmers reducer (Potassium ferricyanide + sodium thiosulfate).

Should I use only potassium ferricyanide, or whole Farmers reducer, or simply diluted bleach that I got from Moersch?

We are speaking about very light effect - some face in the crowd, or eyes on the portrait, it should be very very light effect.

Thanks,

Depends. If you want it permanent use farmers. If you think you may mess up use the bleak have from your sepia toner kit (potassium ferricyanide/potassium bromide) diluted around 1:7 or 1:9 then when you're happy fix the print again. If you mess up you can always redevelop before fixing.

I have a jar of Pot Fer. I dilute a very small amount (size of a pea) into about 100ml of water. The whole print goes into a plain non-hardening fix that I mix up from scratch (sodium thiosulfate and a bit of sodium sulfite... don't have exact measurements in my head), for a few minutes, then placed on a the back of a flat-bottomed tray which I lean in the sink. Print is rinsed quickly, then I brush the PF on the area I want to lighten, keeping the hose directly under the area, quick rinse, then drop print in the fix. I repeat this process until area is lightened. If bleaches too quickly, dilute the PF more.
This method works very well.

Masking fluid (liquid frisket) or rubber cement can be used to protect those portions of the print where reduction is not desired.