restores dryed, stiff and faded leather jackets (per the jacket mfg) I used liquid WD-40...(not the propelant can type) and a "spritz" bottle filled with wd-40...after 3 soakings, my "olive drab army camo patern leather Jacket went back to its original Black color and the sun baked stiffness had all but gone away... got to say I was very imnpressed...