Hello, I wonder if someone could help.. 
I am busy making leather belts, usually I use bovine vegetable tanned leather and do it using a spray machine. This time though, I decided to dye by hand.  
First attempt I forgot to wet the leather and it turned out quite blotchy, so I soaked them in water for about a minute hoping that would remove some of the dye and then I let it dry over the weekend.  
Today i noticed they were very light and still quite uneven so i dyed them again, this time dip dying to try and get them more even. 
they have been drying for a while and now some of the strips have a white powdery substance on them, is this normal? 
Some of the strips are buffalo leather, maybe it is a more pourous leather? it seems to be getting worse.  
I have attached a pic of the belts.  
thanks 
Karen