The only watercolour made with Nitram charcoal! Nitram Charcoal Watercolour is made with Nitram Powdered Charcoal and natural ingredients. Highly pigmented, it contains no additional colourant. Mix it with water to paint directly onto paper or other absorbent substrates. Nitram Charcoal Watercolour is easily absorbed and dries quickly, making it ideal for creating transparent washes or extra fine lines. Conforms to ASTM D-4236. Contains 50 g. Ingredients: Nitram Charcoal Powder, gum arabic, water, honey, glycerine