Guajava - Guajava demonstrates antifungal, antibacterial, anti-inflammatory, laxative, and analgesic properties. It is used to treat herpes ulcers, ringworm, dermatitis, and urinary tract infections. Guajava is related to cassia and senna, and contains anthraquinones found in those other species as well.
Vitamins B, particularly biotin (vitamin B7) and B12 are important to keep healthy nails. If your nutrition lacks in vitamins B, nails will be dry and brittle. Vitamin C deficiency is associated to brittle nails and may cause infections of nail tissues.
Pumpkin seeds, beef, pork, lamb, dairy products and hard-boiled eggs are good sources of zinc. A lack of iron in foods can cause nails to grow with ridges rather than with a smooth surface. Eat leafy greens, prunes, grains, seeds, red meat, broccoli and tofu as sources of iron.oods with B Vitamins. A lack of B vitamins, specifically biotin and vitamin B-12, can make your nails dry and brittle. Consume carrots, tomatoes, leafy green lettuce, liver, peanut butter, nuts, peas, oatmeal and beans as sources of biotin.