Detailed answer

Hyperpigmentation is primarily caused by overproduction of melanin, the pigment responsible for the color of our skin. While constant friction or pressure from wristwatches or bracelets may lead to skin irritation or inflammation, they are not a direct cause of hyperpigmentation. However, if the skin is already damaged or irritated, it may become more prone to hyperpigmentation. It is important to note that other factors such as hormonal changes, sun exposure, and certain medical conditions can contribute to hyperpigmentation. If you are experiencing concerns about hyperpigmentation, it is best to consult with a dermatologist who can assess your individual situation and recommend appropriate treatments or skincare routines.