Dry Derwent Inktense delivers pure vibrant colour but when completely washed out it is transformed into a translucent ink-like paint which, when dry, can be worked over. The blocks are extremely versatile and can be used for a wide range of creative effects. You can use them like pans of paint. Dip them in water and apply colour directly to the paper, use dry on their side of apply directly to wet paper for instant intense colour.