Harmful GHS Symbol The GHS pictogram with an exclamation mark is used on substances that are harmful or irritating. The health effects are acute (set in quickly), but they're less severe than something marked with the toxic symbol.

The exclamation mark GHS pictogram is used to indicate a health hazard. This symbol warns of substances or mixtures that may cause less severe health effects or damage; such as irritants (skin and eye), skin sensitizers, acute toxicity, narcotic effects, respiratory tract irritants, and those hazardous to the ozone layer.

The symbol within the pictogram is an exclamation mark. This symbol indicates that hazardous products with this pictogram can cause certain health effects for example, skin irritation, eye irritation, and/or skin sensitization.

An exclamation mark on a product label indicates a chemical is acutely toxic or can cause narcotic effects. It also indicates a chemical may cause skin, eye, or respiratory irritation.