The goal of this clinical trial is to test the effects of social media use on e-cigarette use in young adults who use e-cigarettes. The main questions it aims to answer are:

• Does reducing social media use change young adults' e-cigarette use?
• Does reducing social media use change things such as young adults' mental health and what they see on social media?

Participants will complete surveys and submit screenshots showing how much time they spend on social media.

Researchers will compare young adults who reduce their social media use to young adults who use social media as usual, to see if their e-cigarette use differs.

The overall goals of this project are to understand how young adults' social media use affects their nicotine vaping and to identify intervention targets that mitigate social media's impact on vaping. Prevalence of vaping and social media use among young adults have increased in tandem. Exposure to vaping-related social media content is common and is associated with vaping. Intense social media use appears to contribute to young adults' increased mental health symptoms, which are linked to tobacco product use. This project aims to contribute to scientific understanding of the causal links between social media use and vaping in young adulthood. Young adults with past-month vaping will report time spent on social media, vaping-related social media content exposure, social comparison on social media, mental health, and vaping behavior. After a 1-month baseline measurement period, they will be randomized to reduce their social media use (incentivized) or use social media as usual for a 3-month experimental period. Longitudinal within- and between-subjects analyses will test relationships between time spent on social media, risk factors for vaping, and vaping behavior. Specific research aims are to: (1) investigate the relationships between a reduction in social media use and: a) vaping content exposure, b) social comparison, and c) mental health, and (2) examine whether reducing social media use reduces past-month vaping days, vaping episodes per vaping day, and puffs per vaping episode.

Inclusion Criteria:

• Age 18-25
• Daily social media use
• Ownership of a smartphone
• Vaping (i.e., use of a nicotine e-cigarette) on 1-19 days of the past 30 days
• Residing in the United States

Exclusion Criteria:

-Lack of capacity to provide informed consent

Deidentified data will be available from the Principal Investigator upon reasonable request.