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How long do nails take to break down?

Author

Sarah Oconnell

Published Mar 17, 2026

How long do nails take to break down?

After a nail separates from the nail bed for whatever reason, it will not reattach. A new nail will have to grow back in its place. Nails grow back slowly. It takes about 6 months for a fingernail and up to 18 months for a toenail to grow back.

Accordingly, what happens if your nail breaks?

Broken nails can cause a nail bed injury. In some cases, the nail can get completely torn off, crushed, pinched, or blood can pool beneath the nail. This is known as a subungual hematoma. Nail bed injuries are far more serious than typically fingernail injuries.

Likewise, how long should your nails be? As for nail length, there's a small spectrum of acceptable lengths. You should leave at least a sliver of “white” at the top of your nails—that space where the nail starts to separate from the skin it protects.

Correspondingly, do toenails break down?

Cracked toenails can be the result of a number of factors. Frequent exposure to water and dry conditions can result in cracked nails. Harsh beauty products, such as nail polish remover and some soaps, can also put your nails through the ringer, leading to your nails cracking.

What should I eat to strengthen my nails?

Take a biotin supplement

Biotin can help strengthen hair and nails and also helps the body's nervous system to function properly. It can be found in foods like sardines, cooked eggs, and legumes, or you can take a B vitamin or supplement.

Can nails repair themselves?

After a nail separates from the nail bed for whatever reason, it will not reattach. A new nail will have to grow back in its place. Nails grow back slowly. It takes about 6 months for a fingernail and up to 18 months for a toenail to grow back.

How do you repair a damaged nail bed?

Too Many Gel Manis?Here's How to Repair Damaged Nails

01 of 10. Use a Cuticle Cream or Oil.
02 of 10. Soak Nails in Olive Oil.
04 of 10. Up Your Biotin Intake.
05 of 10. Use a Keratin Treatment.
06 of 10. Strengthen with Collagen and Camellia Extract.
08 of 10. Change Your Polish Removal Routine.
09 of 10. Wear Gloves.
10 of 10.

What happens if you leave blood under your nail?

If left untreated, a simple subungual hematoma typically grows out with the lengthening nail plate and resolves on its own, although sometimes subungual hematomas can result in your nail falling off (onycholysis). Until the nail grows out, however, you can expect weeks to months of blue-black discoloration.

What does Onycholysis look like?

If you have onycholysis, your nail will begin to peel upward off of the nail bed underneath. This is not usually painful while it happens. The affected nail may become yellow, greenish, purple, white, or gray, depending on the cause.

Why is my nail growing back weird?

Aside from the process described above, there are several other possibilities for why a nail might grow back ingrown: If you lost your toenail due to an injury (such as dropping a heavy object on your toe), you may have damaged the nail matrix. This could cause the nail to grow back in thicker or misshapen.

Can I remove my own toenail?

If you have a damaged toenail, you might be tempted to remove it yourself. But while damaged toenails sometimes fall off on their own, it's not a good idea to force that process. Removing a damaged toenail yourself could lead to serious complications that end up making matters worse.

Will a split nail grow back together?

Can a split nail grow back together? If you have minor nail splitting, as long as you take better care of your nails, then as they grow, they will heal and be healthy again.

Can your stomach digest nails?

A 1954 edition of the South African Medical Journal included a case report about a “bezoar of the stomach composed of nails.” A bezoar is a “mass found trapped in the gastrointestinal system.” Fingernails aren't digestible.

Do fingernails die?

Hair and fingernails may appear longer after death, but not because they are still growing. Instead, a persons fingernails and hair may appear longer because the skin around them has retracted, according to the Dermatology Clinic at UAMS. After death, dehydration causes the skin and other soft tissues to shrink.

How long does hair take to decompose?

one to two years

Do fingernails contain DNA?

Nails contain genomic DNA that can be used for genetic analyses, which is important for large epidemiologic studies that have collected nail clippings at baseline and for future epidemiologic studies that consider collecting nails as a DNA source for genetic analyses.

Does keratin decompose?

Hair (and nails) is composed of keratin which is fairly resistant to decomposition by proteolysis (protein decomposition). There's not a uniform speed at which it occurs, it depends on environment, internment method, bacteria. In short, it tends to decompose slower than soft tissues, but there's not a set duration.

What are nails made of?

Nails themselves are made of keratin (say: KAIR-uh-tin). This is the same substance your body uses to create hair and the top layer of your skin. You had fingernails and toenails before you were even born.

Are hard fingernails healthy?

They are made up of layers of the protein keratin and grow from beneath the base of the nail under your cuticle. As new cells grow, older cells become hard and compacted and are eventually pushed out toward your fingertips. Healthy nails are smooth, without ridges, grooves, spots or discoloration.

Is it better to cut or file your nails?

Use a nail file for shaping, or if it hurts when you clip your nails. You don't need to use it in just one direction, but do file gently to avoid damage. Fingernails should be given a curve, while toenails should be cut straight across, to prevent ingrowth.

Do nails grow faster when you cut them?

This may be because biting causes trauma to the nail, stimulating circulation in the nail bed. This also supports the theory that frequent nail clipping makes your nails grow a little faster. Regular clipping doesn't carry the same risks as nail biting, so if you want longer nails, clipping is the better route.

How can I strengthen my nails overnight?

Here are our top tips for strengthening nails and preventing nail damage—so you can better enjoy all your gorgeous manicures.

Limit water exposure.
But drink lots (and lots) of water.
Keep your nails on the shorter side.
Make cuticle oil or crème a part of your routine.
Try a DIY olive oil nail soak.

What is the most natural nail shape?

One of the most natural looking shapes, the squoval mimics the shape of your cuticle: flat, but with slightly rounded edges. It's easy to maintain at home too, and great if you're leaving your nails naked.

What do unhealthy nails look like?

Did you know your nails can reveal clues to your overall health? A touch of white here, a rosy tinge there, or some rippling or bumps may be a sign of disease in the body. Problems in the liver, lungs, and heart can show up in your nails.

What nail length do guys like?

Nails grown barely past your fingertips are the ideal length, says Fisher. They look feminine but won't stop you from, say, unzipping him or sexting. See what else guys really notice about your looks.

What nail shape makes fingers look thinner?

Round shaped nails, which feature a short length with a naturally curved edge, are perfect for subtly elongating short and wide fingers. The shape can also be used to make wide nail beds appear thinner and longer. If you have narrow nail beds, don't rule out a round shape either.

Do nails grow round or square?

The shape of our nails has changed dramatically over the past century. Before, there were only a few simple shapes such as square, oval and round. Now the nail shape world has expanded and we have added the almond shape, coffin shape, the stiletto, and the most popular, the squoval.

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