formaldehyde in tobacco E-cigarette vapor has cancer-causing chemical E-Cigarette, E-Cigar Research: More Formaldehyde
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Its like your skin is constantly under attack, unable to defend itself

Oxid Med Cell Longev 2019:7092151 Su Y et al (1998) Effect of cigarette smoke extract on nitric oxide synthase in pulmonary artery endothelial cells

That's the case here

Moayeri, F., Hsueh, Y
