Unless it is very dirty or stained, it is usually best not to soak Nubuck leather. Spray AQUILA in a fine mist over the Nubuck surface. AQUILA will grab on to the greasy dirt particles, will break them down and turn them to dust. Once dry, for nubuck leather furniture, gently go over the surface with a vacuum cleaner and a brush attachment to remove dust and dirt. For shoes, do the same or simply go over the shoes with a Nubuck brush. If needed, repeat this step for as long as you can see improvements. For heavily stained shoes, you may need to use a “Nubuck eraser.”
To keep its velvet-like nap, Nubuck must be cleaned and brushed regularly, otherwise, over time it will flatten down and become shiny, and turn into smooth leather. For Nubuck leather boots or shoes, it is even recommended they be brushed gently after each wear. For Nubuck leather furniture, special attention should be given to brushing the headrests, harm rests and seating areas.
Had no idea what unbuck leather was, so it looks like the letters were reversed to say Nubuck. Whew!
Here is a product, apparently recommended by Nubuck, that will help you. I have never used it or had any purpose for it, but it seems to be one product of choice. An alternative is to contact Nubuck and ask what they recommend:
The moisture can be restored with a conditioner. Here's one that's available on Amazon:
Hi Cassandra, hope these help you out,
Hi Cassandra: Here are some sites that may help:
Here is a preferred recommended conditioner. Please check reviews and Q&A and see if it’s a product that you might wish to consider to use
I use automotive leather cleaner & conditioner. Vehicles are subjected to much more severe conditions and direct sunlight so it's better than anything else I have found.
How to Clean & Condition Nubuck Leather
Would Saddle Soap do the trick?
Here is some information to help you. https://www.hunker.com/12001874/how-to-soften-leather-with-olive-oil