Verdigris ink is transparent and can be layered up for a more intense colour. As it dries the colour deepens. Perfect for washes but may be too faint as a calligraphy ink. Be careful to rinse brushes and nibs after use.
Safety notes:
Copper is an irritant on the skin, so wash immediately if you come into contact with it. It is toxic if consumed so keep away from children and pets.
