Vaporizers are devices that heat substances, usually herbal materials or concentrates, to a temperature that releases their active compounds in vapor form without combustion. This process allows for a smoother inhalation experience and can reduce harmful byproducts associated with smoking. Vaporizers come in various types, including portable, desktop, and pen-style models, offering different features such as temperature control and battery life. They are popular for both recreational and medicinal use, often associated with cannabis and essential oils.