What is the relationship between age spots and melanin pigmentation?

　　Senile spots refer to seborrheic keratosis. Under normal circumstances, seborrheic keratosis is somewhat related to melanin deposition, and seborrheic keratosis may be caused by melanin deposition. The analysis is as follows:

　　Melanin deposition refers to the phenomenon of excessive local accumulation of melanin granules produced by melanocytes in the skin. During the formation of seborrheic keratosis, melanin deposition plays a certain role. As age increases, the body's metabolism gradually slows down, as does the metabolic function of the skin. This makes it difficult for melanin within the skin to be excreted normally from the body, making it prone to accumulation and resulting in melanin deposition. Similarly, the slowed metabolism of aging skin cells means that metabolic waste products such as lipofuscin cannot be promptly removed from the body and can accumulate locally in the skin, gradually leading to the formation of seborrheic keratosis.

　　However, not all cases of seborrheic keratosis are entirely caused by melanin deposition. The formation of seborrheic keratosis is the result of multiple factors acting together, including age, genetics, lifestyle, UV exposure, and other factors.

　　To prevent and improve seborrheic keratosis, it is recommended to avoid prolonged exposure to strong sunlight. If necessary, you can visit a hospital for photorejuvenation therapy. Photorejuvenation uses photon energy of specific wavelengths acting on the skin surface, which can oxidize subcutaneous melanin and stimulate collagen regeneration, making the skin fairer and smoother. The general reference price for photorejuvenation is 2000-4000 yuan per session, and some improvement may be observed after 3-5 treatments, although slight redness and swelling may occur.