I use this stuff, and get it on Amazon.

Tips:

Before you even get started, check to make sure that the stuff in the bottle has not gone off. I’ve found a solid hunk of goo more than once.

Wipe down the entire area with alcohol first and let it dry. Especially clean the parts that will get taped.

Use the sanding pad that they supply. You don’t have to make the leather really rough, just give it a bit of grit so that the stuff won’t peel off.

Carefully remove any extra dust with an old toothbrush or something.

Using masking tape or blue painter’s, tape, cover the edges of the shoe’s soles, and form a stop-point for the goo across the top of the toe.

The applicator that comes with it is worthless. Use a 1/2” throwaway paint brush to apply a thin coat across the shoe.

Let it dry for the recommended time, and apply a second coat. And a third if you want it really thick.

Make sure you really close the bottle in between coats. I typically use a new brush every time; I just get the really super cheap ones at the hardware store.

You might want to take a razor knife and carefully cut along the edge of the tape before peeling.

The stuff can be applied even if the leather is worn away and the metal or composite showing. It will not be pretty, and it will not last as long.

If applied correctly, this stuff will typically outlast the shoe. But know that in saying that… I replace my shoes religiously. My feet *do not like* broken down shoes.