i've got a 50 yrs old brown box kelly that has some cracks on the top flap and sides where the foldings are. i inspected them thoroughly just now and they're less than 0.5mm deep. my bag just came back from spa a few days ago and looks/feels much better than when i first received her.
however, i'm wondering what i'd need to do next to prevent the cracking from getting worse. and if i can "pamper" her myself without having to send her away for 3 months every now and then. i've tried meltonian before i decided to send her to spa a few months ago and it did help a little, but i'm open to any advice in looking after box leather.
OK Here's what I would do see if she will absorb Blackrocks..thru the stuff Hermes put on top of the leather...I think it will be covered with Meltonian and then have been buffed, if this is the case use the blackrocks and lift off as much of the colored topping that has been placed on the leather's normal skin..just the brown polish that Hermes put on it..next if you have a clean surface now keep treating her with blackrocks..as many times as she can absorb it may be 5-7 treatments..next use the Obenauf's keeping the bag warm and the Obenauf's warm and liquidy you may need to warm it in the microwave..give her at least 2 treatments... this should help keep her from getting worse. Finally buff her out and use a matching colored Meltonian cream all over and buff...she should be good to go.