Is there a black leather sealant/protective polish you can use on the steering wheel?

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2012 Mazda 3 i-Touring
I am freaking out because I nicked the leather on my steering wheel with my fingernail somehow and it took a tiny chunk out of it. The sun also breaks down the black on the leather over time so is there something really good that I can use on the steering wheel to protect it? Has anyone done this? 2012 Mazda 3.
 
As far as I can tell it's real leather, but I think it's just on the steering wheel itself. I'm not sure if it's real leather where the Mazda symbol is on the center panel where the airbag is. This is a 2012 i-Touring.
 
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