The Pura 4 smart fragrance diffuser uses innovative smart features paired with premium, clean scents to give you the most modern, customized, and high-end scenting experience possible. Lemon Leaf & Mandarin Corriander Pura Scents - Thymes Mandarin Coriander is filled with notes of lively mandarin oil, robust coriander, vibrant grapefruit, calming lemon balm, green rosemary leaf, and warm cedarwood. Thymes Lemon Leaf features notes of lemon verbena oil, lily of the valley, geranium, and bergamot. Safe & Clean Scents - All Pura 4 smart fragrance diffuser scents are created with clean ingredients. Formulated without parabens, phthalates, dichlorobenzene, mineral oil, DEA, petroleum, formaldehyde or propylene. Smart Features - Adjust fragrance intensity, set schedules and timers, and more in the Pura app. Simply insert your smart fragrance vial and Pura 4 automatically detects the fragrance, creating a seamless swapping experience. Enjoy a consistent, long-lasting fragrance experience based on the temperature in your home with new adaptive diffusion.