By Kathleen Richards for East Bay Express
So how can consumers stay safe? [Dr. Jahan] Marcu recommends looking for a third-party seal of approval on products (such as PFC, or Patient Focused Certification, of which he is the director), critically reviewing the label (beware of propylene glycol), and not being afraid to ask the company questions about its ingredients and testing. Also, don’t buy any product that doesn’t come with storage and usage guidelines. And when it comes to using the device, don’t inhale or hold down the button for too long because you may be smoking the concentrate. All that said, “true vaporizers are absolutely safe,” he noted.