Scented Wax Melts Found to Produce Indoor Air Pollution Comparable to Diesel Exhaust

A Purdue University study reveals that terpenes in wax melts react with indoor ozone, forming nanoparticles that may pose health risks.

Scented wax melts release terpenes that react with indoor ozone, forming ultrafine particles comparable to those from diesel engines and gas stoves.
The study, conducted in a controlled test house, measured nanoparticle concentrations exceeding one million particles per cubic centimeter during typical wax melt use.
These nanoparticles are small enough to penetrate deep into the lungs and potentially enter the bloodstream, raising concerns about long-term health effects.
Researchers emphasize the importance of proper ventilation when using wax melts, particularly in energy-efficient homes with lower air exchange rates.
The findings challenge the perception of wax melts as a safer alternative to traditional candles, highlighting the need for further research on their health impacts.