What type of hazard do flammable substances pose?

Flammable substances primarily pose a fire hazard because they can easily ignite and contribute to the spread of fire. This characteristic is crucial in the context of safety, especially in settings such as esthetics practices where products containing alcohol or other flammable ingredients may be present. Understanding that these substances can catch fire from heat, sparks, or open flames emphasizes the importance of proper storage, handling, and disposal practices to prevent potential fire incidents. Recognizing flammable substances as fire hazards is fundamental in ensuring a safe working environment and mitigating risks associated with combustion.

While health hazards, environmental hazards, and chemical hazards are important considerations in managing substances, the specific nature of flammable products categorizes them directly as fire hazards, highlighting the immediate risk they can present in an environment where heat and ignition sources may be present.