If you are anywhere near the OC, check out a place called Factotum. I was referred to them by the Chloe boutique at South Coast Plaza, and they completely removed an ink mark from my Betty. They have several OC locations. They are great!!!
http://www.factotumleather.com/
Hi, my Chloe is in need of some TLC, it needs a bit of work. Can you recommend anyone in the LA area who specializes in working on Chloe handbags.