I bought a new Porte Tresor wallet today, and while I was at the boutique my SA told me a few helpful things that I thought I'd share: 1. The dustbags are changing again. It's softer than the last batch which were linen-y, more like the old ones that were soft and fuzzy. (hope this helps when making future authentications) 2. It's ok to moisturize the vachetta leather; but not often. They don't want you to do it because it will make it patina faster. But when used with discretion, it's ok. 3. It's ok to clean the vachetta leather -- spot treat it. For both the cleaning and the moisturizing, he recommended the Coach leather cleaner & conditioner as it is very similar to what LV uses. Hope this information is useful to you all.