Air Plants, also known as Tillandsia, are some of the easiest plants to care for - but they do require some care and proper environmental considerations in order to thrive. While they are called "air plants" as they do not require soil and take their nutrients from the air, they still need water, nutrients, and light to survive.
Air Plants are technically epiphytes, meaning that they grow in nature on another tree, host, or object. However, they do not steal nutrients from their host, only using it as a home to grow on.
Air plants use tiny vessels located throughout their leaves trichomes to capture nutrients and moisture from the air. most important need for the plant will be bright, filtered light.
The bottom line when it comes to watering air plants is to soak the leaves every week to 10 days for 30 minutes each time. Then, always make sure to let the plants completely dry upside down before returning them to their regular spot.