The substance thiomersal can be found in vaccinations, anti-fungals and antiseptic. It also can be found in some mascaras.
Do you know what is it made from?
Thiomersal has been used through the 20th century in spite of its inherent danger. It is very toxic if ingested orally, applied to the skin or inhaled. The use of this substance is being phased out and replaced by more benign substances. It has been known to cause mercury poisoning when used in mascara!