Horadam Aquarell Water-Colour Ground, Fine is a light-resistant and non-aging primer used in watercolor paintings. Suitable for smooth surfaces such as canvas, smooth cardboard and wood. The product can be used as is and should be applied in at least 3 layers. You can also dilute the product with a maximum of 10% water, then more layers are required. When the primer dries, a white, smooth, matte and elastic film is formed, which makes the paint adhere better to the surface.