Does the Purest Sleep Diffuser have a white noise option? January 23, 2019 18:52 Updated No, the Purest is a sleep scent diffuser only. Related articles What does the Proposition 65 notice mean? What settings on the Duet can I control wirelessly from my mobile device? Can I use a timer smart plug with my sound machine? How many drops of essential oil and/or scents is recommended per use? What is your return policy?