Hi I have successfully experimented and it works. I bought the kiwi black shoe paste polish rm2.90. Clean the surface that needs to be treated with mild soap/leather cleaner then dap dry. Use a dry soft sponge and apply the black paste generously on the area to be treated. dont worry about uneven colour difference, it will blend evenly when done later. Leave it for 10 minutes. Then rub it off with a dry clean cloth. then finally apply clear leather protector or any leather conditioner and admire.