Quote Originally Posted by Ketron
I used the dynamix kit with a sponge, mainly because their airbrush that was supplied was rubbish. instructions says either sponge or airbrush for both dye and clearcoat?
I have a few of the clearcoats / sealans and they all it needs to be sprayed on. The FAQ says the same.

An airbrush must be used if you wish to apply final protective lacquer of leather finish. This is not mandatory, however it will increase scuff resistance and the overall lifespan of the repair.
I've found that the finish doesn't hold up well without a sealant though.