Detailed answer

Dark spots, also known as hyperpigmentation, are primarily caused by an overproduction of melanin in certain areas of the skin. This can be due to various factors such as sun exposure, hormonal changes, acne scars, or skin injuries. While vitamin C plays a significant role in maintaining skin health and promoting collagen production, deficiencies in vitamin C do not directly cause dark spots. However, vitamin C does help in improving the overall appearance of the skin and reducing the appearance of dark spots by brightening the complexion and promoting a more even skin tone. It is advisable to maintain a healthy diet, including foods rich in vitamin C, and to use skincare products that contain vitamin C to help minimize the risk of hyperpigmentation.