Bostik blu stick features Acid-free smooth solid stick glue. Goes on blue, dries clear so you know where the glue has been applied. Features Designed to bond paper, cardboard and fabrics. Acid-free therefore non-corrosive and non-yellowing. Non-wrinkle, convenient and mess free. Recommended Uses Ideal for sticking paper together, gluing photos in albums, creating invitations as well as other art and craft applications.