Which of these is a typical effect from skin exposure to the substance?

Skin irritation is a common reaction to various substances, especially those that are toxic or hazardous. When skin comes into contact with irritants—such as chemicals, certain industrial materials, or allergens—there can be an inflammatory response. This response may manifest as redness, swelling, burning, or itching, which collectively are identified as skin irritation.

Understanding skin irritation is particularly relevant in the context of industrial environments, where operators frequently handle various substances. Proper personal protective equipment (PPE) is crucial in preventing skin exposure to these substances to avoid the uncomfortable and potentially harmful effects associated with irritants.

In contrast, the other effects listed, such as color change in skin, increased hair growth, or skin tightening, are less typical when comparing the commonly documented repercussions of skin exposure to irritants. While there may be circumstances in which skin color changes or other effects occur, they are less frequently associated with typical skin interactions in a workplace setting.