According to the EWG's database, Bronopol is a known human immune system toxicant and a known human lung and skin toxicant. At low doses, one or more animal studies show brain and nervous system effects, gastrointestinal effects, and broad systemic effects. This ingredient is restricted for use in cosmetics in Canada and listed by the European Union as a toxin affecting wildlife and the environment. For links to research data documenting the effects above, visit the database's data page on 2-BROMO-2-NITROPROPANE-1,3-DIOL.
In addition to concerns above, Bronopol is also susceptible to the formation of nitrosamines (known carcinogens) and formaldehyde.
So, what is it doing in baby wipes? Bronopol is a highly effective antimicrobial ingredient and is used in place of alcohol or other preservatives to keep baby wipes fresh. However, many alternative ingredients exist to replace Bronopol that do not show the high risk for health concerns.