Yes. But these conditions present challenges to all hot styling tools, including VOLOOM, and may require some adjustments in your styling routine. First, you need to use VOLOOM on dry hair, especially in humid conditions. If the hair is damp, or if you sweat, the structure that VOLOOM provides will not last as long. Also, you may find that you need to use the same type of styling products that you would usually use in these climates to combat humidity, such as humidity blockers, heat styling sprays or finishing sprays. These will help to preserve the volume in humid environments.