Control of spotting chemical hazards in commercial drycleaning. National Institute for Occupational Safety and Health.

Many hazardous chemicals are commonly used in drycleaning shops to remove garment stains. Workers performing stain removal may be exposed to these toxic chemicals through skin absorption, eye contact, or inhalation of vapors. The primary hazard is dermatitis from chronic or acute exposure. Dilute hydrofluoric acid, found in some products that remove rust stains, may cause severe chemical burns with deep tissue destruction that may not be evident until several hours after prolonged contact.