Vegetable-tanned leather absorbs traces of wear and tear. It ages but does not spoil. It is the unique changes that occur with time and use that testify to the naturalness of the product. The colouring of the tannins imparts intense tones and many nuances to the leather, which over time and with use tend to resurface. Cowhide is a very easy leather to clean: simply brush it with a damp cloth to bring out its colour and shine.
To moisturise and protect the leather, you can use a clean, dry cloth to rub it gently with the help of a specific neutral product, such as shoe cream (always use a natural/neutral leather conditioner, not coloured creams or polishes).
You can find these leather products in any shoemaker, in shops that sell leather products and even in some well-stocked supermarkets; it is essential to make sure that they do not release substances while wearing the bag, as they could stain clothes.
In case of accidental scratches, try to absorb them by gently massaging the leather.