Noticed deep lines on the wrist & wrinkles on hand. Please suggest some treatments to cure these lines? (Photos)

Thanks for your question and photos.  Some of the lines just develop naturally as we use our wrists and fold the skin repeatedly, which can't be helped.  As far as making sure you don't get any sun spots or age spots on the hands, a good quality zinc and/or titanium dioxide containing sunscreen is critical every day.  You can get sun damage even through window glass, so even if you aren't specifically going outside, we get sun on the hands most days driving or even just going to and from work or school.  You can talk to your dermatologist about chemical peels to help keep the surface more even, and consider laser treatments if you have a skin type that lasers would be safe for, so best to get an evaluation from an expert in person.  Good luck!