These ceramic filters capture minerals found in tap water to create a cleaner humidifier mist. For best results, we recommend changing the Cloud Humidifier Filter every 3 months. -- At Vitruvi, we're proud to lead the way in the aromatherapy and therapeutic essential oils industry. We’re a family-founded, women-led company offering a premium selection of natural, plant-based products that elevate the atmosphere of your home or office, making them perfect gifts for any occasion. Our carefully curated essential oils and blends are 100% pure, vegan, cruelty free and are free from harmful chemicals and synthetic additives. Paired with our beautifully crafted essential oil diffusers, we bring a touch of luxury and wellness into everyday life, helping you create spaces that inspire and rejuvenate.