I've made a terrible mistake. I have a 2010 Jetta TDI, and have always kept the car immaculately clean. The other day, while cleaning the interior, I noticed some greasy smudges on my leather e-brake lever. I didn't have anything leather-specific cleaning supplies with me, and my OCD got the best of me. I used a microfiber cloth and some Turtle Wax ICE interior detailer to remove the smudge. Before applying, I made sure the bottle indicated that it was safe for leather.
So now, I have a noticeable discoloration in the leather where I had rubbed to remove the smudges.
How do I fix this? I have no experience with leather repair, but it looks like I need to learn pretty quick. Is there anything I can do besides replacing the leather on the handle?