420 devices are intended for use with dry herb products, with some devices capable of vaporizing wax and concentrates as well. Vaporizers work by heating the product chamber to a temperature that is warm enough to vaporize the active ingredients in your product, but is not hot enough to burn. As a result, the product gives off vapour rather than smoke. A vaporizer generally heats up to a temperature of 200º celsius, which is just enough to create vapor but not enough to burn the plant material that is in your vaporizer. This results in a much smoother vaping experience, and leaves out any harmful chemicals that can be created when you burn your product.