Hi guys new to this forum but thought someone might be able to help! I'm struggling to bull one of my boots. I'm using black kiwi polish, duster and hot water. The duster is damp with polish and a bit more water on it but as I rub it into the boot the water is being absorbed and the polish flakes off finely. I've tried leather conditioner incase the leather was dried out but it hasn't made a bit of difference. I've had these boots since October and never had any trouble bulling them till recently. Does anyone know what's causing it and how I can fix it? Thanks in anticipation!