By Julia Carlisle
A woman has been charged with using poison to endanger life after a female customer suffered a cardiac arrest when having a "medical procedure" at a Sydney beauty salon.
Paramedics were called to the Chippendale shop yesterday to treat a woman suffering from a medical episode.
The 35-year-old woman was rushed to Royal Prince Alfred Hospital in a critical condition.
Today, police charged a 33-year-old woman with reckless grievous bodily harm and using poison to endanger life.