Product Overview Joint Wax tm is a 100% all natural custom wax blend used to protect scientific and other glass joints. Prevents Glass Grinding & Frozen Joints. It doesn't slip; it grips and holds to secure your glass joints. How do I use it? Apply Joint Wax liberally to the entire male joint surface prior to connecting Twist the joints while inserting to coat both surfaces evenly to prevent glass grinding Adjust the joints into the final position and you're done To disconnect the joint, simply rotate one side while pulling the joint apart DO NOT pull the joints apart without rotating as damage to the glass may occur