How does cacti use dew?

Cacti utilize dew as a vital source of moisture in their arid environments. During the cooler hours of the night, dew forms on their surfaces, and the cacti absorb this water through their spines and skin. This adaptation helps them survive prolonged droughts, supplementing their water needs when rainfall is scarce. Additionally, the waxy coating on their skin minimizes water loss, making dew collection even more efficient.