Inktense pencils and blocks can be used on their own like traditional colouring pencils or pastels offering a range of vibrant colours, but once water is added the colours turn into permanent ink-like colours that can be used on a wide range of substrates including fabric.
This useful and inspiring guide has lots of photos and illustrations and includes:
Preparing your Palette: Inktense Block Washes
Techniques: Using Inktense Pencils & Blocks
Hand Lettering: With the NEW Inktense Paint Pan Set
Urban Sketching: Drawing People in Public Places with Inktense
Vibrant Landscapes: Layering Techniques with Inktense
Cushion Design: Applying Inktense to Fabrics
Quilting: Using Inktense Pencils
In addition they have a range of useful tutorial videos.