One of the most effective ways to fix skin discolouration is to protect your skin from the harmful UV rays. Using an SPF50+ and wearing clothing and hats to block the sun will prevent you from getting sun spots and will also slow down the deepening of any further pigmentation of your face. There is no guarantee that you can erase the dark spots all together but at home microdermabrasion kits will definitely start you on the path to better looking skin. A glycolic acid peel and exfoliation followed by some soothing and moisturising products will help for your skin to start the restoration process.