Bought this after reading on the Ecco UK Blog that they recommend using the wax oil to care for their boots. I just applied this on my whistler gtx boots after a long salty winter. The leather was dry and scuffed in some areas. The wax oil darkened the leather as expected and returned the leather to a rich supple look. It also returned the water repellent aspect to the leather so water beads up now where as before the water would soak into the leather. Application was easy. I actually rubbed it in with a gloved hand and then let it sit for a bit while i worked on the other boot. I returned to clean off the excess with a dry towel. 24hrs later the surface is a little tacky but the richness of the leather remains. I don't plan to wear the boots much as winter has passed so I won't know how the finish will hold up until next season.