I bought a small vintage Coach bag and unfortunately it is caked in shoe polish. I've tried everything I can get my hands on - scrubbed and soaked overnight three times it in water and dish soap, a big bottle of acetone, non-acetone polish remover, Saphir Renomat, a wide range of leather cleaners and conditioners, different soaps, melting with a hairdryer etc. The polish has been literally impossible to remove despite all that vigorous beating and money wasted spent.
The leather is full grain full aniline and I'm pretty sure it's soaked into the pores as well as caked on the surface. I feel so hopeless but I don't want to give up on it. Even its spaghetti straps are caked.
Does anyone have any advice please? Photograph attached.
ETA: I have five more of this bag style in different colours that aren't shoe-polished as well as a bunch of other vintage Coach bags in the same type of leather so I'm familiar with dealing with the type of the leather but not the shoe polish removal. Once that is dealt with and gone (hopefully!!!), I can pick things up from there.
I'm a new member and not sure where to post this so mods please move to the right or better place. Thanks