Fingernails are hard, protective coverings made of a protein called keratin. They grow from the nail matrix, which is located under the cuticle at the base of the nail. Fingernails serve several functions, including protecting the tips of fingers, enhancing the sense of touch, and aiding in grasping objects. Fingernails grow at an average rate of about 1/8 inch (3 mm) per month. Factors such as age, health, and nutrition can influence their growth and appearance. Regular care, including trimming and cleaning, helps maintain healthy fingernails and prevents issues like fungal infections or hangnails.