If you have higher melanin content, your skin becomes darker . To decrease the melanin levels go for remedies described in this video, which are really easy to do. Continuous usage of these on your hands and legs will result in fairer soft skin.
Lemons have high amount of vitamin C and antioxidants, which encourages new cell growth that results in brighter and lighter skin tone in hands and legs.
Take aloe Vera gel and apply it on your hands and feet. Keep it on for as long as you like and wash it off. This is the easiest one and it really works too to remove dark color.
Potato juice is especially beneficial for reducing dark pigmentation on hands and legs.Mix potato juice with cucumber juice and aloe Vera gel and apply on hands and legs to get ride of suntan.
Curd always works good for tan on hand and feet. You could mix it with besan and use it as a pack.