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.
Weak and brittle nails that can easily become cracked or chipped are a common problem affecting both men and women. There are three main factors that cause brittle nails â aging, long-term use of nail polish and frequent exposure to water. Brittle nails can also be associated with some diseases, such as hyperthyroidism, hypothyroidism, lung conditions, psoriasis, lichen planus, alopecia areata, eczema, anemia, fungal infection, and endocrine disorders.