Solid care for maintaining the value of leather furniture

We got a set with the purchase of our leather furniture to (Möbel Homann). The leather guarantee was subject to the condition that the sofa are regularly treated with the Cleaner and the Leather fat emulsion. I'm doing this for 4 years now about 2 times a year and after each treatment, the leather is soft and beautiful again glänzend.Ich use it also for the leather seats in the car.
Many people think that you just have to wipe wet leather and that was it. But if leather is not regularly re-greased, it dries out and may form irreparable cracks at the stress points and the surface becomes dull.
The product is highly recommended.