Polish wearers know that nails can yellow from frequent applications of heavily pigmented colors. To the rescue: a lemon. Rubbing a wedge on the surface of your nails will help whiten them. For a more intense treatment, soak nails for a few minutes in lemon juice (the citric acid helps remove discoloration). Dab on some cuticle oil, then use a buffer to gently slough away the old, stained nail plate.
| Credit: Jen Gotch

Sunny yellow lemons perk up almost everything with their bright, acidic flavor.

Learn how to choose, store, and use lemons.