Liam Carter
Fingernails and toenails are made of a substance called keratin, which is the same protein that makes up our skin and hair. Nails grow from underneath our skin at the matrix, which is the root of the nail. New cells form in the matrix. Nails almost always grow back, even after accidentally whacking one with a hammer. The nail may look a little different, but typically you will get it back. In rare circumstances, the entire matrix can be damaged, and if that happens, the nail won't grow back. It can take up to 6 months for fingernails to grow back and up to 18 months for toenails to regrow.
| Characteristics | Values |
|---|---|
| Time taken for a toenail to grow back | 6 months to 2 years |
| Time taken for a fingernail to grow back | 4 to 6 months |
| Factors affecting nail growth | Age, season, overall health, nutrition, hormones, blood flow, trauma, medication, skin conditions, diseases |
| Nail matrix | The "factory" where your body makes new nails |
| Nail bed | Lies beneath the nail plate and contains blood vessels that nourish the growing nail |
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What You'll Learn
Fingernails grow back in 4-6 months
Fingernails have a good regeneration capacity, but they grow slowly. On average, it takes about 4 to 6 months for a fingernail to grow back completely. Nails grow from underneath the skin at the nail matrix, which is the root of the nail. New cells form in the matrix, and the nail pushes old cells out as it grows. Fingernails grow at a rate of about 1/10th of a millimeter or 1/10th of an inch per day.
Toenails, on the other hand, grow much slower than fingernails, taking up to three to four times longer to regrow. It usually takes anywhere from 6 months to 2 years for toenails to grow back, with an average of 18 months.
The rate of nail growth can vary depending on various factors. Nails on the dominant hand tend to grow faster than the non-dominant hand. Similarly, nails on longer fingers grow faster. Fingernails also grow faster during the day and in the summer, possibly due to increased Vitamin D absorption. Additionally, nail growth can be slower in older adults and in colder climates. Overall health also affects nail growth, with slower growth observed in individuals who are sick or malnourished.
Certain injuries, illnesses, and medications can also impact nail growth. For example, a serious injury or illness can cause nail loss, and conditions like eczema and psoriasis can affect the nail matrix and slow nail growth. Chemotherapy and other medications can also cause temporary nail growth abnormalities. In the case of nail loss, proper medical care can help promote healthy nail regrowth.
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Toenails regrow in 6 months to 2 years
Toenails grow back in about 6 months to 2 years. Nails grow from the nail matrix, the "factory" where your body makes new nails. This matrix is the root of your nail, and new cells form here. As these new cells grow, older cells are pushed up and through your skin. The cells on the surface die and harden, turning into nails.
Toenails take longer to regrow than fingernails, which take about 4 to 6 months to grow back. On average, it takes about 18 months for a toenail to completely regrow. This is because toenails are generally subjected to less trauma than fingernails, and because fingers receive more blood flow, likely contributing to faster fingernail growth. Toenails grow at an average rate of 1.62 mm per month.
The rate of nail regrowth can vary from person to person and can depend on the reason for the nail loss. For example, nails tend to grow slower in older adults and in colder climates. Nails grow faster in the summer and on the dominant hand. Overall health also has an impact on growth. Nail growth can slow down if you are sick, malnourished, or have a nutritional deficiency. Hormones also affect regrowth, so toenails and fingernails might grow quicker during pregnancy.
There are some things you can do to help your toenail regrow. Keeping your toenail clean, dry, and protected is important. You can also take biotin supplements, which promote cell growth and help your body metabolize protein-building amino acids, contributing to faster nail growth. Applying olive oil or Vaseline may also speed up regrowth.
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Nail matrix injuries can cause nail loss
The nail matrix is the "factory" where your body makes new fingernails and toenails. It is located just below the nail fold, which protects it from injuries. However, nail matrix injuries are quite common and can cause nail loss. Mechanical injuries, such as a strong blow, pinching, or crushing the fingertip, can damage the nail matrix and disrupt the process of healthy nail growth. This can lead to nail plate thinning, deformation, and the appearance of deeper grooves and ridges. In some cases, the nail may fall off due to severe injury.
Certain habits and improperly performed nail care procedures can also result in matrix damage. For example, cuticle picking or cutting with a cuticle pusher can lead to matrix damage under the lunula, where the nail is still soft and delicate. Similarly, improper use of a drill can cause damage if it is pressed too hard and too deep around the cuticles. Removing nail designs aggressively or using overly sharp tools for hybrid, acrylic, or gel manicures can also damage the nail matrix.
In addition to mechanical injuries, health-related issues can also cause nail matrix damage and nail loss. Infections, such as bacterial, fungal, or viral infections, can trigger inflammation of the matrix, weakening the nail. Dermatological conditions like psoriasis or eczema can also affect the nail matrix. Nutritional deficiencies, including a lack of biotin, zinc, iron, silicon, or vitamins A, C, and E, can contribute to matrix damage and nail loss.
It is important to note that nail matrix damage can be treated, and healthy nails can often grow back with proper medical care. The regeneration process requires time, patience, and adherence to care recommendations. In some cases, surgical intervention or nail reconstruction may be necessary. The recovery timeline can vary, typically ranging from a few weeks to several months or even up to two years, depending on the severity of the injury and individual factors.
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Nail infections can slow regrowth
Fingernails and toenails are made from keratin, a protein that is also found in our skin and hair. They protect the soft tissue beneath them and keep the tips of our fingers and toes safe. However, due to trauma, infection, or other reasons, we may occasionally lose a nail.
Fungal nail infections often develop slowly, usually starting at the edge of the nail before spreading to the rest of it. Sometimes, the whole nail can break off, causing the surrounding skin to become painful and swollen. In addition to fungi, certain skin conditions and diseases can affect nail growth. For example, severe eczema can interfere with nail growth, resulting in Beau's lines (horizontal ridges), pitting, and texture or colour changes.
It is important to seek treatment for nail infections as they can slow down the regrowth process. Over-the-counter and prescription medications are available to treat nail fungus, but it can take up to 18 months for the fungus to grow out. In severe cases, surgical removal of the nail may be necessary. For other types of infections, such as nail psoriasis, corticosteroids, biologics, and topical steroids may be used to improve nail appearance and promote regrowth.
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Healthy nails require good hygiene
Healthy nails are a reflection of good overall health and require proper care and hygiene. Nails are made of a protein called keratin, which is also found in our skin and hair. They protect the soft tissues underneath them and keep the tips of our fingers and toes safe.
Good nail hygiene is essential to maintaining healthy nails and preventing infections. Nails can be a breeding ground for dirt, germs, and bacteria, which can contribute to the spread of infections. To prevent this, it is important to keep nails clean and dry. Wash your hands regularly and scrub the underside of your nails with soap and water or a nail brush. Keep your nails short and trim them frequently with clean, sharp nail clippers or scissors. Avoid biting your nails or hangnails, as this can damage them and increase the risk of infection. Instead, use a clean, sanitized nail trimmer to clip hangnails.
In addition to maintaining good hygiene, protecting your nails from water exposure is crucial. Excessive water exposure can weaken your nails, causing them to split, peel, or break. Wear gloves when cleaning or washing dishes, and moisturize your hands afterward. Toenails should also be kept short and trimmed regularly to minimize the risk of trauma and injury. When toenails are thick and difficult to cut, soak your feet in warm saltwater before trimming.
Overall, practicing good nail hygiene and taking care of your nails can help promote healthy nail growth. If you notice any changes in the appearance or texture of your nails, it is important to seek medical advice, as it could indicate an underlying condition.
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Frequently asked questions
It can take anywhere from 6 months to 2 years for a nail to grow back. Toenails tend to take longer to grow back than fingernails.
Keep the nail bed dry, clean, and covered with petroleum jelly and an adhesive bandage until the nail has grown back. Apply a new bandage whenever the bandage gets wet. Watch out for signs of infection such as increasing heat, redness, pain, tenderness, swelling, or pus.
Serious health events like heart attacks or illnesses like COVID-19, pneumonia, or peripheral artery disease can interrupt nail growth. Certain medications, skin conditions, and injuries can also affect nail growth.
