Avery Glue Stic Disappearing Purple Color, 1.27 oz., Washable, Nontoxic, Permanent Adhesive, 1 Glue Stick (00221) Goes on purple, dries clear; apply the right amount of adhesive with an easy-to-see purple glue that disappears once dry Glue adheres smoothly, minimizing any clumping or wrinkling Strong and permanent adhesive, but washes easily off hands and clothing Safe for children; glue sticks are nontoxic, acid free, ACMI certified and conform to ASTM D 4236 Large glue stick covers more surface area; an excellent choice for school projects and arts & crafts that require more glue