Irritants are substances that can cause discomfort or inflammation when they come into contact with the skin, eyes, or respiratory system. Common examples include pollen, dust mites, and certain chemicals found in household cleaners. These irritants can trigger allergic reactions or exacerbate conditions like asthma. In addition to environmental factors, irritants can also be found in personal care products, such as fragrances and preservatives. When exposed to these irritants, individuals may experience symptoms like redness, itching, or swelling. Identifying and avoiding specific irritants can help improve overall comfort and health.