Definition
A moistener is something that adds moisture or makes something damp. π¦ Think of it as the opposite of a dehumidifier. It can be a humidifier for a room, a spray bottle for plants, or even your breath fogging up a mirror. It counteracts dryness. Unlike a desiccant, it increases the amount of water present. Moistening helps to keep things hydrated and prevent them from drying out.