I would use a little acrylic paint or Leather refinisher or leather dye mixed with conditioner for the corners. I would condition the rest. I wouldn't try any color on anything other than the edges. It doesn't usually cover stains or blend in well, in my experience. Conditioners, especially Blackrocks, will probably make those corners look great but it won't be permanent. By using a coloring agent, you can extend the length of time it will look good. One of the reasons I use acrylic paint or LR over leather dye is because I can remove it easily if I'm not happy with the results, as long as I do it fairly soon. Dye isn't removable the instant it touches the leather.
Some people don't believe in the use of any coloring products at all. Most of the purses I rehab aren't collector's items so I don't think I'm committing a sin by touching up with color. For NYC and Bonnie Cashin bags I'm more of a purist. When you rehab bags like these, you shouldn't be aiming for perfection. Embrace the patina.Thank you - as a newbie I appreciate your bringing up issues that I might not have considered. I hadn't seen her post, but have read some folks are conditioners-only restorers. I've been thinking of LR as a last resort after trying all spot removal and conditioners and trying to use only a teeny bit with conditioner on a small area. I will give this more thought.
Dumb question: I get why dyes like Tarrago that sit on top of the leather would be lumped in with acrylics, but what about penetrating oil dyes like Fiebings mixed with conditioner for touching up corners? Do those still smother leather/stitching? Or is it more about preserving the bag's original integrity? These are honest questions - I really do want to understand the risks of different restoration approaches better.
By the way, I've always tried to keep the Leather Refinisher off the stitches.
I haven't had a lot luck covering up ink stains with any product. For the bag that I used LR all over, I had covered the ink with acrylic paint first. On other bags, I haven't been able to get the thin coats of LR I use to cover up ink stains.
I had an off white bag with multiple stains. Leather Refinisher didn't cover them completely, even though they weren't super dark.
My other successes with ink are the use of Lincoln E-Z cleaner on the suede lining of a Dakota bag, the use of zit cream on a white leather bag, and the use of puff paint on a recent pebbled leather bag.
I'm pretty much the same way. I try to avoid dye, partly because it isn't easy to get good results.I've used Fiebings dye mixed with Lexol on a non-Coach briefcase that had sun and water damage, and it worked great. It evened out the color back to its original. I may have used it on a Coach bag that had an ink stain, but I can't remember now. I'm not sure whether that damages the stitching. I wouldn't think so, but I'm not sure.
Personally, I'm probably in the middle as far as restoration products go. I've definitely used more than just conditioners on restoration, and I dyed a bag that would have been unusable to me otherwise, but I'm careful about what products I choose and how I use them. I don't think using a small amount of Wood-N-Stuff mixed with conditioner to touch up corner wear would be a huge deal, but I'd hate to see a bag covered with it that would've been ok otherwise. I think there is a balance when it comes to rehab. In the end, if it is your bag for your enjoyment, you should do what you want to it.
I really love LR is on recent pebbled leather bags. I used it diluted with conditioner on a couple of faded bags and it looked great. If you put it on full strength, it feels like plastic.