To prevent the leather from drying out, cracking, or fading unevenly, try to keep it away from direct heat and sunlight for extended periods of time. When the leather feels dry, treat it with a leather conditioner made for vegetable-tanned leather. Test the conditioner on an invisible surface first.
Leather conditioner or cream moisturizes the material so that it doesn’t dry out and crack. This won’t make your leather belongings “shine,” but it will protect them. Note that in most cases conditioners don’t waterproof your leather. Leather conditioners are lotion-like and are to be gently rubbed into the leather. The hide will soak up the conditioner, just like your skin would soak up a moisturizer.
It’s generally recommended, conditions every 6-12 months, try to let your bag or accessories completely dry out before re-applying.