I've always used Luvinmybags products on Chanel.
Over on the Hermes forum, Docride recommends Black Rocks cleaner/conditioner. I used it on my DH's really beat up black briefcase. By beat up -- it is supposed to be black, a smooth leather and both front and back were rubbed in some spots to light grey. With one application the color looked more like it should -- becoming darker almost presentable again. That was last week and I need to repeat application.
I then applied it to a grey box leather kelly, which is similar to lambskin only I suspect box scratches easier. The purse is preloved and is great shape but I wanted to condition to prevent dryness. Nice result, no complaints. I've ordered Obernauf's weatherproofing for the box should we ever be caught in the rain, the box won't blister (and be ruined).
Back to LVMB products, go to their website and any questions call Barbara. I think they give a discount to tpf members. I can say I have used their products over the years and have been pleased with the exception of Shine which I thought did nothing. I will add that since the line has been reformulated. LVMG are lotions and creams so there is no temporary darkening, waiting and praying for it to dry okay. The cream protectant prevents any sort of staining and I can truly attest to that claim. Printing ink rubbed off from a SA's business card onto the white caviar at the back pocket. A little moisture and some rubbing with a tissue and it came off.
HTH