Whats the best way to clean and condition Black color leather seats?

I have had no luck using 3 different brands including BMWs own and still not happy with the results. First just cant get the leather to come out soft and shiny plush. The worst part is the white residue left over!

Maybe I am using a wrong technique. Any help is appreciated.

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2003 BMW X5 3.0i Steptronic, Sport, Prem, Rear Climate, Xenon