6) Olive oil and lemon juice
Another way to make your nails whiter is to prepare a solution with olive oil, water and lemon juice. Squeeze 1 lemon and pour the juice into a glass or a small bowl, then add 2 tablespoons of olive oil and 2 tablespoons of water. Mix them together, and let your nails soak for about 5/6 minutes. The moisturizing effect of olive oil, along with the bleaching acid of lemon, will make your nails brighter.