How Far Back Under Your Skin Do Your Fingernails Grow?

Fingernails, composed of keratin, grow from the nail matrix, which is located beneath the skin at the base of the nail. The nail matrix produces new cells that push the nail forward and upward, resulting in nail growth. As new cells are produced, older cells are pushed out and eventually shed from the free edge of the nail.

The length of the nail matrix varies from person to person, determining the maximum potential length of the nail. Generally, fingernails grow about 3 millimeters (0.12 inches) per month, with toenails growing slower at around 1 millimeter (0.04 inches) per month.

The nail matrix extends back about 5-6 millimeters (0.2-0.24 inches) under the skin. The visible portion of the nail, also known as the nail plate, is typically 1-2 millimeters (0.04-0.08 inches) thick.

Related Questions:

  • Where do fingernails grow from?
  • How large is the nail matrix?
  • How fast do fingernails grow?
  • What is the average length of the nail plate?
  • How deep is the nail matrix under the skin?

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