Proper stiff beeswax grease made in Finland. Good stuff for boots and all leatherware in general. Doesn't contain suspicious stuff, made of 100 % natural ingredients in Finland!
Apply with your fingers, rag or brush. Let soak in preferably overnight and wipe excess off. Apply a second layer if it looks like the boots crave for some more. Remember the little crevice between the sole and the upper, this is one of the first places where water will try to seep in. You can also heat the grease up a bit to make it more supple.
This is stiff, which means it won't soften the leather much.
Although any leather likes grease, might the membrane under it disagree; this will probably block the membrane, making your boots as breathable as a plastic bag. Intended for regular leather footwear & leatherware only.
Well, if you want to make your boots all smooth and waxy, go for it. But the official term is "this will ruin your boots!". It will NOT ruin them per se, only radically change the appearance and breathability properties, and again the leather likes the grease. In the old days soldiers were issued so called 'roughout boots' which came all nubucky-like from the factory. They were then liberally treated with grease or wax until the surface was smoothed out, then polished and whatever.
In theory this stuff is colourless, but will darken the leather. The more porous and/or dry the surface is, the more this will darken it. Think of what water does to the appearnce of your boots.
Manufactured by Nahkakunta Ltd., which is a big name in cobblerware in Finland.
Adam D.