Is E-liquid safe to use?
E-Liquid has been used for nearly a decade by large numbers of people. While propylene glycol can cause allergies and irritation in a minority of people, no significant risks to healths have been recorded despite intense monitoring.
The long term effects of vaping are not yet know, although current opinion in the tobacco harm reduction is that it is likely to be in the region of 100 times safer than inhaling cigrette smoke.
Most of these components in e-liquid are well known and are used in many food products such and household products. Currently only pharmaceutical grade (USP) or food grade PG and VG are safe to use.
Nicotine
E-Liquid contains nicotine and should only be used and handled by adults 18+ or 21+ or older depending on state laws. Please be aware that nicotine is a known poison. However, in the small doses usually found in cigarettes and electronic cigarettes it is safe to handle and to inhale in a vapour form. While unlikely to harm an adult, e-liquid could harm or kill a child.
Nicotine has a similar risk profile to caffeine, and can raise blood pressure. Little is still known about nicotine, but we do know that it is the combustion that takes place when a cigarette is smoked that causes most of the harm, not of the nicotine. Nicotine may also have some beneficial effects.
E-liquid should never be handled by anyone underage and should only be used by people who are smokers and have a tolerance for nicotine. E-Liquid should always be kept in a childproof bottle, and out of reach of young children.
Should you get q-liquid on your skin, wash the e-liquid off with soap and water.