Uplift your senses with this bestselling fragrance, Grapefruit. This NEST x Pura Smart Home Fragrance Diffuser Refill Duo features the iconic scent’s exhilarating blend of pink pomelo grapefruit and watery green notes with lily of the valley and coriander blossom.   Cruelty-Free & Vegan Free from Formaldehyde, Parabens, Phthalates Smart Phone Enabled Flame-Free 2 Vials, Up to 240+ hours of scent How to Use: This exquisitely scented NEST x Pura Home Fragrance Diffuser Refill Duo includes two smart vials with Puralast™ technology that can be used with any NEST x Pura 3 Diffuser or NEST x Pura 4™ Diffuser, each providing up to 120 hours of scent. When used in a Pura 4™ diffuser, fragrance vial is automatically detected, making scent recognition simple. Made in the USA.