Combine 1 tsp. each of powdered milk, honey and lemon juice with ½ tsp. almond oil to create another mask which you can use to lighten dark skin. Apply this mask all over your skin and let it sit on your skin for 10 to 15 minutes before rinsing it. You can use daily or alternately with other skin lightening masks until you reached your desired skin tone. Lemon juice is known to have natural bleaching properties but the American Chronicles warns the use of lemon juice as it can make the skin photosensitive.