Some candle wicks have a very thin metal core material used to keep the wick upright while burning. If this core is of a lead-based composition, unsafe levels of lead can be released into the air.
"Lead cored wicks not widely available"
Some 20 years ago, North American suppliers and manufacturers voluntarily stopped using lead based wicks in candle products, and they remain generally unavailable to candle makers today. If you've recently purchased a candle from a US producer, chances are it does not use a lead cored wick. Most metal cored wicks used today have zinc or tin as the core ingredient, and are completely safe to use in wicks. Read about Zinc wicks from the leading manufacturer of candle wicks
FACT: Testing done by the United States Consumer Product Safety Commission indicate that 3% of candles available for purchase may contain unsafe levels of lead.
Take a minute to follow the steps below to see if you may be at risk.
How to tell if your candle has a lead wick: