California Vape Ban 2025: What You Need to Know Vape Street California bans most flavored tobacco products starting January 1 The evidence is clear that bans on flavored vapes produce unintended consequences, including increased cigarette use among adults and teens who might have otherwise switched to less harmful alternatives, Cato's Dr. Jeffrey California's ban on most flavored tobacco effective Wednesday CBS Los Angeles Researchers: Flavored E cig ban could derail smoking cessation efforts