Another wonderful product from SewlineTM is the new Aqua Eraser.
This tool provides a gentle way to remove pencil or water-based ink marks from fabric without hurting the weave or color. Just fill the eraser's reservoir with water, or a water/detergent mix to remove marks with the soft, fiber point. When damp, the point absorbs your markings by lightly dabbing or running it over the area to be erased! Points can be replaced when they become discolored from use.
The Aqua Eraser comes with a 15 ml bottle of liquid eraser detergent that can be mixed with water.