Chemophobia is an irrational fear of chemicals. It includes the fear of aluminium in vaccines, methylparaben preservative in cosmetics and formaldehyde residue in shampoo. Since the early 1990s, advances in toxicology have allowed scientists to detect traces of adulterant substances in everyday products - even down to parts per billion concentrations. Toxicological research has shown most of these substances are in such low doses that they pose zero...