Cleaning and Conditioning Your Leather Bag
Personally, I like to keep tampering with my leather bags to a minimum, because I prefer to "grow old" with my leather bags. Proper storage is probably the only rule that I follow rigorously. Still, it doesn't mean that keeping your leather bags clean and conditioned is a bad thing. Quite the opposite. By spending a few minutes to take care of your bags, it will make a big difference in how good it looks. Just as you need to clean and moisturize your own skin, leather needs to be maintained in the same way to stay supple, pliable, and resilient.
Cleaning Your Leather Bag
In many cases all that is necessary to clean your leather bag is a damp cloth or a store bought leather cleaner. This will remove any surface dust or dirt. (Always follow manufacturer's instructions when using a cleaner specifically for leather.)
If the leather has been in contact with perspiration, water, or is stiff, you may need a more substantial method to cleanse it.
A leather conditioner is necessary for this step. There are hundreds of products available for this task, so be sure to read the label before using a leather conditioner to be sure that that particular product is suitable for your vintage leather item. (Do not use leather conditioners that contain waxes or silicone which do not allow the leather to breathe)