Stained nails is ugly for your appearance and bad for your health. Therefore cleaning your nails well is a most necessary thing. First method is soaking nails in a commercial denture cleaner. Denture cleaners can contain one of several different active ingredients. Dissolve a denture cleaner tablet in a dish of warm water according the the label instructions. Make sure to dissolove tablet completely. Soak your hands in the diluted denture cleaner for five minutes. After done clean using warm water. Second one is creating a peroxide soak. This soak made from hydrogen peroxide and baking soda. Mix 1/2 cup (125 ml) hot water with 1 table spoon of (5 ml) 30% hydrogen peroxide and 1 table spoon of (15 ml) baking soda in a small plastic bowl. Stir well to fully dissolove the baking powder.Soak your finger tips fully sinking nails in this solution for 1 to 10 minutes, or until the stains disappear. After this wash your hands with soap and water when done and apply lotion or moisturizing cream.