This Guitar Polish is made with Carnauba Wax, making it eco-safe, non-toxic, biodegradable, and "Silicon-free". This product was voted the #1 Carnauba wax/water-based formula for quick & easy polishing for all types of guitar and bass instruments. It is the world’s most effective guitar polish. The easy on-easy off formula ensures there is no smearing. This spray can be used on all instrument finishes, mobile devices, computer screens, counter tops, and eye wear. It has over two decades of proven performance and excellence. Comes in a 4 oz. spray bottle.