All kinds of things, ranging from household cleaners to cold air, can leave your fingernails weak and brittle. Try one of these tricks to put the moisture and the strength back in them:
Eggs, buttermilk, and honey. Beat 1 egg yolk, ¼ cup of buttermilk, and 1 tablespoon of raw honey in a bowl. Soak your nails in the mixture for 10 minutes, and then rinse well with cool water. The buttermilk will soften dry cuticles, and the protein in the egg will make your nails hard as, well, nails.
Lemon juice and olive oil. Combine 1 tablespoon of fresh-squeezed lemon juice and 3 tablespoons of olive oil in a bowl, and heat the mixture until it’s lukewarm. At bedtime, use a cotton swab to brush it onto each nail, including the underside and the surrounding cuticles. Put on a pair of soft, clean cotton gloves, and hit the sack. Repeat the procedure each night until your nails are in fighting form again.
Garlic. Add a finely minced garlic clove to a bottle of nail polish, and let it sit for a few days. Then simply paint it onto your nails. Once the polish has dried completely, remove any garlic odor by washing your hands with freshly squeezed lemon juice.