Having yellow nails is a common complaint for the females who frequently decorate their nails with different nail polish colors (especially dark shades). Actually this staining or yellowish color of nails occurs due to formaldehyde which is active ingredient in most nail polishes.
Thus it is strictly recommended to keep your nail bare after regular intervals to let them breath. According to these recommendations, you should leave your nails without any nail polish for at least one week in a month. Another effective tip is to apply the base coat before any colored nail polish. A transparent base coat acts a protecting sheet between your nails and colored polishes.
Apart from the frequent nail polishing, several other factors also make the nails yellow and discolored. Smoking habit also cause the staining on your nails. Other causes of yellow fingernails include nutritional deficiency, excess exposure to harsh chemicals and nail fungus. For treating the yellow nails, the first thing you should do is getting awareness about the actual cause. By this way, you can take a necessary step to restore the original color of nails. Here are some natural treatments to whiten the yellow nails.