I used this on my black Lancel briefcase which cost me a fortune in Paris 30 years ago. After carrying it around constantly for that long, and though still in perfect functional condition, the exterior was trashed. Let's face it; some things are too elegant and sharp to have a big-time patina and I was at a loss for what to do. While shopping for shoe edge dressing, I ran into this coloring balm and gave it a shot. It worked PERFECTLY. My beautiful briefcase is brand new again. It soaked right in and any traces of restoration or treatment are completely invisible. Even deep scratches in the slightly textured leather are undetectable, and the finish is the original understated luster I am incredibly pleased with this product. I have enjoyed taking care of leather all my life and I simply can't believe it. Bravo.