Our formula is specially developed to work with Tanrevel® devices. We have carefully selected the ingredients and viscosity to achieve the best possible results. If you choose to use a formula from another brand, we cannot guarantee that your device will function properly. This may cause issues such as damage to the nozzle, which can make the device unusable. Please note that the warranty does not cover damages caused by using non-Tanrevel® formulas, and such cases cannot be claimed with us.