I like using Wyo Sheen which you can get from Sheridan Leather. Like everybody else said, apply 1-2 coats and let it dry really well. I let mine dry over night. Then I use an antique dye. I like Fiebing's antique paste. It gets in the cuts, tooling, and grooves very nicely. It also comes off the raised edges well. I've attached a picture of a wallet I just did with Fiebing's mahogany antique paste.