Ghost Bond XL is the strongest bonding adhesive on the market. It gives you the best hold possible for ultimate performance while being kind to your scalp. This heat-resistant, water-based adhesive creates a barrier to kill bacteria while protecting against excessive moisture & sweat. You can feel confident that heat, humidity, sweat, or oily scalp won't stop you from getting 4+ weeks of a longer-lasting, tight bond. Reduce and form a barrier against scalp oilResist lifting in high humidity keep heavy perspiration away from attachments easy application & cleanup