Size:45 ml Drawing Gum is a natural latex, peelable solution used to keep selected areas of an artwork color-free when working with ink, watercolor or gouache. Easy-to-use, it is applied to mask areas prior to applying colors. Once the application is dry, colors are applied and left to dry. The Drawing Gum can then be removed, either by rubbing with fingers or with an eraser to reveal color-free areas and details. The liquid form is available in 45 ml and 250 ml bottles, and is ideal for protecting larger areas. It is also available in a 0.7 mm tip marker, ideal for fine, distinct, continuous applications.