We have cleaned leather for many years and live in a village, where leather has been produced for about 100 years.
Over the years, we've used many products and have found that the best results are obtained when using a foaming product, or creating foam, by applying through a proprietry branded container, after mixing and decanting.
We find the Wizz 500 ml containers, ideal.
When using foam, it's essential that after application, the foam is spread immediately, or you will get spotting or streaking.
We used the Von Schrader product a couple of days ago, with excellent results.
angie