Still experimenting with moulding leather, I just completed my first mask. It went through some evolution at the design stage them before becoming a black cat…
I decided to use “vinegaroon” to colour it black. This is a mix of vinegar and steel wool which causes a chemical reaction with the tannins to turn leather black. It can also be used to age wood. Since it’s a chemical reaction and not a dye there is no risk of the colour coming of on the wearer’s face, though it will take a while for the smell of vinegar to fade!