Detailed answer

Hyperpigmentation is caused by an overproduction of melanin in the skin, often resulting from sun exposure, hormonal changes, or inflammation. Constant exposure to pet fur or animal hair does not directly contribute to the worsening of hyperpigmentation. However, if you have allergies or sensitivities to pet dander or animal hair, it can result in skin irritation or inflammation, which may trigger or exacerbate existing hyperpigmentation. It is important to manage any allergies or sensitivities properly and maintain a consistent skincare routine to prevent irritation that could potentially worsen hyperpigmentation.