Baking soda-mix a baking soda with water and apply it on your neck. Then rinse it off after 10 minutes.Best results will be seen if done at least twice a week. Orange peel-prepare 1 orange peel and orange juice.Then sun-dry the orange peel and grind it into a powder. Then mix it with the orange juice until it forms a paste.Apply this on any hyper pigmented area and leave it for 15 minutes and then rinse it off.apply this mask daily. Potatoes- prepare potato juice and lemon juice.Then mix them and apply it, after 15 minutes rinse it with cold water.should be done daily. Aloe vera- you need fresh aloe vera leaf.cut the leaf and rub the aloe vera gel directly on your neck.leave it for 20 minutes and then rinse it off with cold water.do this once every day