Leather shoes need to be properly taken care of. Since medieval times, dubbin has been used to soften, condition and waterproof leather. It is made of wax, oil and tallow.
Dubbin is essential if using shoe polish as using shoe polish alone will harden leather over time. Applying dubbin before using shoe polish ensures that leather remains soft, supple.
Update 3/22/2011: I asked Dunkelman about dubbin and they said it should be applied after wax.
Dasco Dubbin and other shoe care products are available at Pedro stores in Trinoma, Bonifacio High Street and Mall of Asia.