Detailed answer

Hyperpigmentation is the darkening of the skin caused by excess melanin production. While nail polish or nail care products can sometimes cause skin irritation or allergic reactions in sensitive individuals, they do not directly cause hyperpigmentation. However, certain nail care practices such as improper removal of nail polish or excessive nail filing and buffing can damage the nail bed and surrounding skin, leading to inflammation. Inflammatory conditions or injuries to the skin can potentially trigger post-inflammatory hyperpigmentation in some cases. It is important to follow proper nail care techniques and avoid excessive trauma or irritation to the skin to prevent any potential complications.