How to Get a Toenail to Grow Back Healthy

A lost toenail almost always grows back, but whether it returns healthy depends on three things: the condition of the nail matrix (the growth center hidden under the skin at the base of the nail), whether you keep the exposed nail bed free of infection during the months-long regrowth window, and how well you protect the toe from repeated trauma. Toenails grow at roughly 1.6 mm per month, so a full replacement takes anywhere from nine months to over a year. That pace can feel glacial, and a lot can go wrong along the way. The good news is that most of what determines a healthy outcome is within your control.

Why the Nail Matrix Matters More Than Anything Else

The matrix is a crescent of tissue tucked beneath the cuticle and proximal nail fold. It contains the stem cells that produce the hard nail plate, and those stem cells rely on specific signaling pathways to differentiate properly and push new nail forward.¹ Researchers have identified a specific marker of these nail stem cells in the matrix region, confirming that the matrix is the sole engine of nail production.² If the matrix survives intact after a toenail is lost, the new nail has an excellent chance of growing back normally. If the matrix is scarred or partially destroyed, the nail may return ridged, split, thickened, or permanently deformed.

This is why the cause of nail loss matters so much. A toenail ripped off by a door or dropped object often leaves the matrix untouched underneath, meaning the prognosis for healthy regrowth is good. A crushing injury, a deep laceration through the base of the nail, or chronic fungal infection that has reached the matrix is a different story. In those cases, the matrix itself may need medical attention before regrowth can even begin.

What to Expect in Terms of Timing

Toenails grow at an average of about 1.62 mm per month, which is less than half the speed of fingernails.³ The big toenail tends to grow faster than the smaller ones, but even so, full replacement of a big toenail takes roughly twelve months. The smaller toenails, being shorter, can finish sooner despite their slightly slower rate.

Several factors influence speed. Younger people and men tend to grow nails a bit faster, though the differences are modest. Circulation matters a lot: conditions that reduce blood flow to the feet, like peripheral artery disease or diabetes, can slow regrowth considerably. Seasonal variation plays a role too, with nails growing slightly faster in warmer months. If you have a condition like nail psoriasis, the growth rate may actually be faster than normal, but that speed comes with disordered nail-plate formation, resulting in a thickened, pitted, or crumbly nail rather than a smooth one.⁴

During the first few weeks, the nail bed will look raw and may be tender. A thin, translucent film of new nail often appears at the base within a month or two. The nail plate gradually thickens and opacifies as it advances. Early regrowth sometimes looks wavy or ridged, and that is normal. As long as the matrix is healthy, the texture typically smooths out over subsequent growth cycles.

Immediate Care After Losing a Toenail

If you have lost a toenail to trauma, the first priority is deciding whether the nail bed beneath it needs professional repair. A blood clot under an intact nail plate (a subungual hematoma) does not require nail removal or exploration of the nail bed. But if the nail plate itself is cracked or lifted, or if there is a fracture of the bone underneath that involves the matrix area, exploration and surgical repair are warranted.⁵ Getting this evaluation within the first day or two gives the best chance of a clean outcome, because the nail bed can be sutured before scar tissue forms.

For a clean avulsion where the nail has simply been torn off but the bed looks smooth and intact, the basics are straightforward: clean the area gently, apply an antibiotic ointment, and cover it with a non-stick bandage. Keep the toe protected in a roomy shoe or open-toed sandal to avoid pressure on the exposed bed. Change the dressing daily and watch for signs of infection: increasing redness, swelling, warmth, pus, or a foul smell. Most uncomplicated avulsions heal well with just this home care.

In severe avulsion cases, particularly when the nail bed tissue itself is damaged or missing, more advanced wound-management techniques may be used. One approach involves applying a scaffold material to the exposed bed and using negative-pressure wound therapy to promote tissue regeneration before the nail begins to grow back.⁶ These are hospital-level interventions, but they illustrate an important principle: a healthy nail bed surface is the foundation for healthy regrowth. If the bed heals with a lot of scar tissue, the nail that grows over it will mirror those irregularities.

Dealing With Fungal Infection During Regrowth

Fungal nail infection, or onychomycosis, is one of the most common reasons toenails become damaged in the first place, and it is also the biggest threat to a healthy regrowth. If the fungus is still present in the nail bed or surrounding skin when the new nail starts coming in, the replacement nail will grow into an infected environment and come out thick, discolored, and brittle all over again. Treating the infection before or during regrowth is essential.

For mild to moderate infections affecting less than about half the nail, topical antifungal lacquers applied directly to the nail and surrounding skin can work. Several prescription options exist, with efinaconazole showing the highest cure rates in studies. These treatments are generally applied daily for six months to a year.⁷ The long duration is not because the medication is slow to act, but because you need to keep treating until the entire infected portion of the nail has grown out and been replaced by healthy nail.

Oral antifungal medications like terbinafine remain the gold standard for more extensive infections, particularly those involving the matrix. They work from the inside out, reaching the nail bed through the bloodstream. Older oral antifungals carried more side-effect concerns, which is part of why topical lacquers were developed as alternatives.⁸ Your doctor will likely check liver function before and during a course of oral treatment, but for most people the risk is manageable and well worth it when the infection is entrenched.

High-concentration urea creams (typically 20 to 40 percent) are sometimes used alongside antifungals. Urea softens the nail plate in a dose-dependent way, making it easier for topical antifungals to penetrate.⁹ Urea alone is not a great antifungal treatment, but when combined with antifungal medications, it improves cure rates compared with antifungals used by themselves.¹⁰ The keratolytic effect is well tolerated and essentially free of side effects, making it a useful add-on.¹¹

Non-thermal laser therapy has also been explored for toenail fungus. In one retrospective study, about two-thirds of treated toenails met the criteria for individual treatment success, and nearly nine in ten showed an increase in clear nail over a six-month period, with no adverse events.¹² Laser treatment is not yet considered first-line, but it can be an option when topical or oral antifungals are not tolerated or have failed.

Preventing Reinfection While the Nail Grows

Curing a fungal infection in the nail is only half the battle. The dermatophyte fungi that cause onychomycosis live in the environment around your feet, particularly in shoes, socks, shower floors, and shared surfaces. Researchers have found that footwear from most onychomycosis patients is contaminated with viable fungi, making shoes a significant source of reinfection.¹³

A multi-pronged hygiene approach helps break the cycle. The evidence-based recommendations include:¹⁴

• Laundry: Wash socks, towels, and bed linens in hot water (at least 60°C) for 45 minutes or more to kill fungal spores.
• Shoe hygiene: Use antifungal sprays or disinfectants inside shoes and on insoles, allowing adequate contact time. Rotate shoes so each pair dries completely between wearings.
• Surface cleaning: Disinfect shower floors, locker room benches, and other shared surfaces with bleach or hydrogen peroxide-based cleaners.
• Personal tools: Do not share nail clippers, files, or other foot-care instruments, and sterilize your own between uses.
• Sunlight: When feasible, expose shoes or insoles to direct sunlight, which helps reduce fungal load.

These steps feel tedious, but skipping them is one of the most common reasons people go through months of antifungal treatment only to see the infection return in the new nail. If you are halfway through regrowing a toenail and you are still wearing the same shoes you wore when the infection was active, you are essentially replanting the problem.

Nail Psoriasis and Other Inflammatory Conditions

Not all toenail damage comes from trauma or fungus. Psoriasis affects the nails in a large portion of people who have the skin condition, and it can cause significant nail-plate changes even without obvious skin plaques nearby. When psoriasis targets the nail matrix, it produces pitting, crumbling, and white discoloration. When it targets the nail bed beneath the plate, the result is onycholysis (lifting of the nail from the bed), oil-drop spots, and subungual buildup.¹⁵ The affected nail plates often thicken to the point of crumbling, and the visible damage can lead people to avoid everyday activities.¹⁶

Getting a psoriatic toenail to grow back healthy means controlling the underlying inflammation. This usually requires systemic treatment, whether that is a biologic medication, a conventional immunosuppressant, or targeted therapy prescribed by a dermatologist or rheumatologist. Topical treatments alone rarely resolve nail psoriasis because the nail plate acts as a barrier that prevents creams from reaching the matrix and bed. Some physicians inject corticosteroids directly into the nail matrix, which can help but is painful and needs to be repeated. The key point is that if inflammation keeps cycling, the new nail will keep emerging damaged. Healthy regrowth requires disease control at the source.

Footwear and Mechanical Protection

Repetitive mechanical trauma is an underappreciated cause of toenail problems, and it is especially relevant during the regrowth period when the nail plate is thin and fragile. Runners and hikers are particularly prone. Research on running-related toenail injuries has shown that the foot slides forward inside the shoe at ground contact, closing the gap between the toenail and the front of the shoe. Over the course of a long run, this gap decreases further, increasing the force on the nail with each stride.¹⁷

If you are trying to grow back a healthy toenail, this is worth paying attention to. Shoes that are too short or too narrow in the toe box will press on the regrowing nail and can cause a subungual hematoma, onycholysis, or outright re-avulsion. During the regrowth period, err on the side of extra room. A thumb’s width of space between your longest toe and the end of the shoe is a common guideline. Lace shoes snugly through the midfoot to prevent the foot from sliding forward. For people who run, consider temporarily shortening distances or switching to open-toed footwear for casual wear to give the nail time to establish itself.

Ingrown Toenails and Regrowth

A regrowing toenail sometimes curves into the surrounding skin as it advances, creating an ingrown nail. This is particularly common after trauma because the nail bed and surrounding soft tissue may have swollen or shifted during the healing process, and the thin new nail plate does not always track perfectly down the center of the bed.

Mild ingrown edges can often be managed by soaking the foot in warm water, gently lifting the nail corner, and placing a small piece of cotton or dental floss underneath to guide the nail over the skin fold. For persistent or recurrent ingrown toenails, surgical options become more reliable. A large Cochrane review of 24 studies and over 2,800 participants found that partial nail avulsion combined with chemical ablation of the matrix edge using phenol was significantly more effective at preventing recurrence than the surgical procedure alone, with a recurrence rate of about 14 percent versus 41 percent.¹⁸ This procedure permanently narrows the nail slightly but leaves it looking normal and dramatically reduces the chance of the ingrown problem coming back.

Does Biotin or Nutrition Help?

Biotin supplements are heavily marketed for nail growth, and you will find them in every pharmacy’s hair-and-nail section. The evidence, though, is more limited than the marketing suggests. In people who are biotin-deficient, or in those with a specific condition called brittle nail syndrome, biotin supplementation has shown improvements in nail firmness, hardness, and thickness.¹⁹ But true biotin deficiency is uncommon, and for people with normal biotin levels, the evidence for any benefit is insufficient.²⁰

That does not mean nutrition is irrelevant. Nails are made of keratin, and producing a strong nail plate requires adequate protein, iron, zinc, and other micronutrients. If your diet is severely restricted or you have a condition that impairs nutrient absorption, the regrowing nail may come in thin or brittle. A balanced diet that includes enough protein is a reasonable baseline strategy. Mega-dosing vitamins beyond what you are deficient in, however, will not make the nail grow faster or stronger. If you suspect a deficiency, a blood test is more useful than a supplement bottle.

When Chemotherapy Causes Nail Loss

Certain chemotherapy drugs, especially taxanes like docetaxel and paclitaxel, are known to cause nail damage ranging from discoloration and ridging to complete nail detachment. This happens because these drugs target rapidly dividing cells, and the nail matrix is one of the most active growth zones in the body. In a study of 79 patients with taxane-induced nail side effects, removing the detached nail plate and applying topical antibiotics and steroids led to symptom improvement within about two weeks.²¹

Regrowth after chemo-induced nail loss tends to follow the same timeline as other causes, roughly nine to twelve months for a toenail. Gradual healing of the nail bed and progressive nail regrowth have been documented over a six-month follow-up period, with pain and functional problems improving steadily and no recurrence of severe nail complications during continued treatment.²² If you are undergoing chemotherapy and notice nail changes, bring them up with your oncology team early. Cooling the fingers and toes during infusions (frozen gloves and socks) is sometimes used to reduce blood flow to the nail matrix and limit the drug’s impact, though tolerance varies.

Surgical Options for Persistent Nail Deformities

Sometimes, despite your best efforts, a regrowing toenail comes back split, ridged, or otherwise deformed because the matrix was scarred during the initial injury. When the deformity is cosmetically or functionally bothersome, surgery can help. Correcting a split nail involves excising the scar tissue from the matrix and proximal nail fold and preventing re-adhesion of the wound edges. If the matrix defect is too large to suture closed, a free matrix graft from a neighboring area or from the big toe can be used to fill the gap.²³

For nails that are shortened or irregularly shaped due to distal scarring of the nail bed, a technique involving excision of a crescent-shaped wedge of scarred tissue from the distal bed can lengthen the functional nail bed and improve the appearance of the nail plate. This approach has been described as simple and effective, sometimes meeting patient goals after just one procedure.²⁴ These procedures are performed by dermatologic or plastic surgeons with nail-unit expertise. If you have been waiting over a year and the nail is still growing in abnormally, a referral to one of these specialists is reasonable.

Imaging the Nail Before Deciding on Treatment

When it is unclear whether the matrix is intact, whether a mass is forming under the nail, or whether the nail-bed architecture has been disrupted, high-frequency ultrasound can provide detailed imaging of the nail unit without any need for biopsy or surgical exploration. In a series of over a hundred cases covering common nail lesions, this imaging modality provided new or corrected diagnostic insights in about a third of cases and influenced surgical planning in all of them.²⁵ If your doctor is unsure why a regrowing nail looks abnormal, or wants to assess matrix damage before recommending surgery, this kind of imaging is a useful and painless first step.