Hi all, longtime listener and first-time caller! I am so impressed with everyone's work here and would appreciate some advice about a putty Stewardess I'm working on. The bag is lovely and has incredible striations on the outside. See pic 3, a gratuitous glamour shot. However, the inside is problematic and shows significant darkening, likely because of the use of an oil-based conditioner--this is what the person who sold it to me posited. I buy that notion, but it's not a given. It's definitely not an isolated grease stain since all of the interior is darker than the rest of the bag.
What I've done so far -- two dunks, and in the second one focused on really rubbing the affected area, which feels slimier than the rest of the leather. That has resulted in some noticeable lightening, as seen in the progress from pic 1 to pic 2. But, it's not a huge difference.
Wondering what folks would recommend going forward. Trying a degreaser? Continuing to dunk? Are there any downsides to repeated dunks? I don't want to stress this bag out because I'm fixated on a section that is usually covered by the flap!
Ideas and advice are very much welcome.