Severe Tanning on Hands from Sun Exposure - #49094

Hello Doctor, I have a very dark tan on my hands caused by outdoor activities, mainly due to prolonged sun exposure during PT and a sports day event. The color difference is very noticeable, where only certain areas remain my normal skin tone and the rest of the hands have become very dark. I have tried several home remedies, but there has been no improvement. I am also concerned because similar tanning is seen on the hands of children as well, due to outdoor activities. Could you please advise: Why this type of severe tanning happens Whether it can be reduced or treated safely What precautions should be taken, especially for children Thank you for your guidance. Regards