Holbein Masking Fluid is a removable light blue masking fluid for use with watercolours. Specifically designed for masking fine details, its light colour has been formulated so as not to distract during the painting process, while still making it obvious to the painter which areas of the paper have been masked. Shake well before use Allow it to dry completely before painting over Remove with an eraser or rubbing with finger Avoid leaving masking fluid on the paper for an extended period of time Read our blog post about tips for using masking fluid with watercolours.Please note: due to trading agreements we are unable to ship this product to the US and Canada.