Derwent Inktense Pencils are watersoluble to give you the intensity of a pen and the versatility of ink. They each have a hexagonal barrel making them easy to hold, grip and control. They leave a translucent effect when washed out and can be washed over again with wet or dry media.
You can use them dry or mix them with water for an ink effect.
Once dry, the colour is fixed and permanent to be long lasting.