All disposable vapes, including Core Zero, are made of the same components as a standard, refillable e-cigarette, but without the nicotine. A tank holds the e-liquid with a coil that heats up to create vapour, powered by a built-in battery. We extensively test all our products before they are released and we only work with the most reputable and trustworthy manufacturers. All of our products are fully EU TPD and UK TRPR compliant and we can provide full Material Safety Data Sheets upon request, just get in touch via our contact page. For the latest up-to-date information on the safety of e-cigs and vaping, we recommend the NHS Live Well site.