This results in only the very top surface being coated and cutting through the skin will show you that the other layers still remain undyed. Spray dye means that custom colour specifications can be carried out to colour the hides for whatever purposes the customer needs.
The dye has to be fixed and excess colour has to be rinsed out to prevent dye transfer from the leather.
This type of dye results in the top and bottom layer of skin (approximately 20% of the leather cross-section attaining dye) along with a few other layers dyed, leaving an undyed middle portion of the leather.
Drum dying can be done with a minimum required quantity of leather and is excellent for achieving a semi dyed-through leather. Drum dye is used for Harness and Bridle leather.
Through dying also requires a minimum quantity of leather and is perfect for reaching consistency in colour penetration throughout the hide.