The viral TikTok hack of placing dental floss under an ingrown toenail to lift it away from the skin has split the podiatric community. The Mayo Clinic includes cotton or dental floss placement as a recommended home treatment step. Cedars-Sinai podiatrist Dr. Stibelman says it “makes things worse” by introducing trauma. The American College of Foot and Ankle Surgeons warns against it. So who is right? The honest answer: both, depending on the severity. For mild cases with no infection and no broken skin, a small wisp of waxed dental floss placed gently after soaking is a recognized technique. For anything beyond mild, it can trap bacteria, increase pressure, and turn a manageable problem into one requiring surgery. This article covers exactly when the hack works, when it backfires, the five-step home protocol that podiatrists actually agree on, and the warning signs that mean you need professional help.
The Hack That Broke the Internet (and Some Toenails)
Scroll through TikTok’s foot care content, and you will find hundreds of videos showing people threading dental floss under an ingrown toenail to lift the nail edge away from the inflamed skin. Some of these videos have millions of views. The comment sections are filled with people saying it changed their lives and people saying it made their infection worse.
Both groups are telling the truth.
About 20% of people who visit a doctor for a foot problem do so because of an ingrown toenail, according to podiatrists. The condition is one of the most common reasons for a foot-related medical visit, and it is also one of the most commonly self-treated conditions in all of medicine, which is why a viral hack attracts so much attention.
An ingrown toenail occurs “when the nail plate [the toenail itself] impinges or sticks into the surrounding flesh of the toe,” explains Michael J. Trepal, DPM, FACFAS, a practicing podiatrist with more than 30 years of experience and the Dean of the New York College of Podiatric Medicine.
Common signs include redness, swelling, tenderness, and pain along the edge of the nail. If the nail punctures the skin, bacteria can enter, and that is when bleeding, pus, and serious infection become risks.
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The Dental Floss Hack: The Case For
The Mayo Clinic explicitly includes cotton or dental floss placement as part of its recommended home treatment for ingrown toenails: “After each soaking, put fresh bits of cotton or waxed dental floss under the ingrown edge. This will help the nail grow above the skin edge.”
The logic is sound: if the problem is a nail edge pressing into flesh, gently lifting that edge and holding it above the skin allows it to grow outward instead of digging deeper. Once the nail clears the skin fold, the pain and inflammation resolve.
Some podiatrists support the technique for mild, non-infected cases with proper execution. The key qualifiers: the nail must not have broken the skin, there must be no signs of infection (pus, significant swelling, spreading redness, warmth), and the floss or cotton must be placed gently after soaking, not forced into an inflamed nail groove.
The technique works best when performed correctly as part of a broader protocol that includes warm soaks, antibiotic ointment, proper footwear, and daily replacement of the material under the nail.
The Dental Floss Hack: The Case Against
“There’s a misconception that jamming in cotton balls or using floss to lift up the nail can help,” said Dr. Stibelman, a podiatrist at Cedars-Sinai. “That’s going to make things worse because you’re introducing more trauma.”
The American College of Foot and Ankle Surgeons agrees: this DIY method can actually worsen the condition and potentially cause infection.
A podiatry practice in Singapore that published a detailed evidence review in 2026 put it bluntly: “if an ingrown toenail is already applying pressure to the flesh, stuffing anything into the area will only increase the pressure further.” They noted that cotton placement “introduces material into an already inflamed nail groove” and, if infection is present, “creates a reservoir for bacteria.”
The difference between the Mayo Clinic recommendation and the TikTok version is significant. The Mayo Clinic describes placing “fresh bits” of cotton or waxed dental floss gently under a mildly ingrown edge after softening the skin with a soak. The viral videos often show people aggressively threading thick floss under an already red, swollen, and visibly infected nail. Those are two very different procedures with very different outcomes.
The Honest Verdict
The dental floss technique is not inherently right or wrong. Its outcome depends entirely on the severity of the ingrown toenail and the technique used.
| Severity | Dental Floss Appropriate? | Why |
|---|---|---|
| Mild (redness, slight tenderness, no broken skin, no infection) | Yes, with proper technique | A small wisp of waxed floss gently placed after soaking can guide the nail above the skin edge |
| Moderate (significant swelling, pain when walking, nail pressing firmly into flesh) | Risky; proceed only if no infection signs | Forcing material under a firmly embedded nail can increase trauma; professional evaluation recommended |
| Severe (infection signs: pus, warmth, spreading redness, bleeding, fever) | No. See a podiatrist. | Placing material into an infected nail groove traps bacteria and worsens the infection |
| Recurring (same nail, same problem, more than twice) | No. See a podiatrist. | Recurrence indicates a structural issue with nail shape or growth that home treatment cannot fix |
If you are going to use the dental floss technique, follow the clinical version, not the TikTok version. Here is how.
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The Five-Step Home Protocol Podiatrists Agree On
Regardless of where they stand on dental floss, podiatrists converge on the same foundational home treatment for mild, non-infected ingrown toenails.
Step 1: Soak the Foot in Warm Water (15 to 20 Minutes, Two to Three Times Daily)
This is the single most agreed-upon home treatment. Warm water softens the skin and nail, reduces swelling, eases pain, and prepares the tissue for any further intervention.
A podiatrist at Certified Foot and Ankle Specialists explains that warm soaks “reduce inflammation and buy time for the nail to grow. The goal is to get the nail to grow out and then cut it straight across.”
Add Epsom salt (1 to 2 tablespoons per basin) or a mild soap. Water temperature should be comfortably warm, not hot, to avoid burns or further inflammation.
With consistent warm soaks and proper home care, mild ingrown toenails often improve within five to seven days.
Step 2: Gently Place a Small Wisp Under the Nail Edge (If Mild and Non-Infected)
After soaking, while the skin is still soft:
- Use a small wisp of sterile cotton or a short piece of waxed dental floss
- Gently tuck it under the nail corner that is pressing into the skin
- The material should lift the nail edge slightly above the skin, not force it upward aggressively
- Replace with fresh material after every soak (old cotton harbors bacteria)
The Mayo Clinic recommends this step, specifying “fresh bits” of cotton or waxed dental floss placed under the ingrown edge after each soaking.
If placing the material causes sharp pain, bleeding, or you cannot do it without significant force, stop. The nail is too embedded for this technique, and you need professional help.
Step 3: Apply Antibiotic Ointment and Bandage
After the soak and (optional) floss placement, apply a thin layer of over-the-counter antibiotic ointment (such as Neosporin or bacitracin) to the affected area. Cover loosely with a bandage.
Cleveland Clinic podiatrist Dr. Georgeanne Botek recommends applying either antibiotic or petrolatum ointment and loosely bandaging the toe after each soaking.
Step 4: Wear Open-Toed or Roomy Footwear
The Mayo Clinic recommends wearing open-toed shoes or sandals until the toe feels better. Tight shoes compress the toes and push the nail further into the skin, directly worsening the condition.
If open-toed shoes are not possible (work requirements, weather), choose the widest, least constrictive shoe you own.
Step 5: Take OTC Pain Relief If Needed
Acetaminophen (Tylenol) or ibuprofen (Advil, Motrin) can help manage pain. Ibuprofen has the added benefit of reducing inflammation.
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What NOT to Do
Cedars-Sinai warns: “Don’t attempt to pry an ingrown toenail out of your skin on your own. You will likely do more harm than good.”
| Mistake | Why It Backfires |
|---|---|
| Cutting a V-shape into the center of the nail | An old wives’ tale. Nails grow from the matrix at the base, not the tip. A V-shape at the top does nothing to change how the edges grow. |
| Digging under the nail with scissors or clippers | Introduces trauma and bacteria directly into an inflamed area. This is what podiatrists call “bathroom surgery.” |
| Ripping the nail corner off | Creates a sharp, jagged edge that grows back into the skin even more aggressively, often causing a worse ingrown than the original |
| Using non-sterile instruments | Increases infection risk. Any tool that touches the area should be cleaned with rubbing alcohol or hydrogen peroxide first. |
| Ignoring signs of infection | Infected ingrown toenails do not resolve at home. Pus, spreading redness, warmth, and fever require professional treatment, possibly antibiotics or a minor procedure. |
| Wearing tight shoes while treating | Undoes the benefit of soaking and ointment by re-compressing the nail into the flesh |
When to Stop Home Treatment and See a Podiatrist
Home care is appropriate for mild cases only. See a podiatrist if:
- The ingrown toenail shows signs of infection (pus, discharge, warmth, spreading redness, red streaks)
- Pain is severe or worsening despite three to five days of consistent home care
- You have diabetes, peripheral neuropathy, or poor circulation (home treatment is not recommended; infection risk is significantly higher)
- The ingrown toenail keeps coming back (recurrence indicates a structural issue that requires a minor procedure, not repeated home care)
- The nail is deeply embedded and you cannot place cotton or floss without significant pain
- You see granulation tissue (red, fleshy overgrowth at the nail edge)
Cedars-Sinai’s Dr. Stibelman advises: the goal of home treatment is to “decrease inflammation and buy time for the nail to grow out.” If that is not happening within a few days, it is time for professional help.
What a Podiatrist Does That You Cannot
For ingrown toenails that do not respond to home treatment, podiatrists have three levels of intervention:
Nail lifting. The podiatrist gently lifts the ingrown edge and places a splint, cotton, or gutter guard beneath it. This is the professional version of the dental floss technique, performed with sterile instruments and proper visualization.
Partial nail removal. Under local anesthesia, the podiatrist removes the portion of the nail that is digging into the skin. The procedure takes about 10 minutes and provides immediate relief. The toe typically heals within two to four weeks.
Partial nail removal with matrixectomy. For recurrent ingrown toenails, the podiatrist removes the ingrown portion of the nail and then applies a chemical (usually phenol) to the nail matrix at the root to prevent that section of nail from growing back. This is the definitive treatment for chronic ingrown nails and has a high success rate.
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How to Prevent Ingrown Toenails From Coming Back
Cut nails straight across. This is the single most important prevention measure. Do not round the corners. Do not cut nails too short. Leave them at or slightly above the tip of the toe.
Wear shoes that fit. Shoes that compress the toes push the nail into the skin. Ensure at least a thumb’s width of space between your longest toe and the end of the shoe.
Do not pick or tear your toenails. Tearing leaves irregular edges that are more likely to grow into the skin.
Keep feet clean and dry. Moisture softens the skin around the nail, making it easier for the nail to penetrate. Dry your feet thoroughly after bathing, especially between the toes.
Choose moisture-wicking socks. Cotton socks trap moisture. Synthetic or wool-blend socks keep feet drier.
Protect your toes during physical activity. Runners, hikers, and skiers are more susceptible to ingrown toenails because of repeated toe-box pressure.
Myths vs. Facts About Ingrown Toenails
| Myth | Fact |
|---|---|
| Cutting a V in the nail center makes it grow away from the edges. | Nails grow from the base (matrix), not the tip. A V-shape at the top has no effect on how the sides grow. |
| The dental floss hack always works. | It can help mild, non-infected cases when performed correctly. For moderate or infected nails, it can trap bacteria and worsen the condition. |
| You should cut the corner of the nail to relieve pressure. | Cutting the corner creates a sharp spike that grows back into the skin, often causing a worse ingrown. |
| Ingrown toenails only happen to people with poor hygiene. | They are caused by nail shape, footwear, cutting technique, injury, and genetics. Hygiene is a factor in infection risk, not in whether the nail ingrows. |
| Home treatment works for every ingrown toenail. | Home treatment works for mild cases only. Infected, recurrent, or deeply embedded ingrown nails require professional care. |
Frequently Asked Questions
Does the dental floss hack for ingrown toenails really work?
It depends on severity. The Mayo Clinic recommends placing waxed dental floss or cotton under a mildly ingrown nail edge after soaking. However, Cedars-Sinai and the American College of Foot and Ankle Surgeons warn that forcing material under a significantly inflamed or infected nail introduces trauma and bacteria. For mild cases without infection, the technique can help the nail grow above the skin edge. For anything beyond mild, it can make things worse.
How long does it take for an ingrown toenail to heal at home?
With consistent warm soaks and proper care, mild ingrown toenails often improve within five to seven days and can fully resolve within one to two weeks. If there is no improvement after three to five days, see a podiatrist.
Should I cut the ingrown part of the nail out myself?
No. Attempting to dig out or cut the ingrown portion at home usually creates a sharper, more irregular nail edge that grows back into the skin more aggressively. This is one of the most common mistakes people make and one of the most common reasons mild cases escalate to requiring professional treatment.
When is an ingrown toenail an emergency?
An ingrown toenail becomes urgent if you see signs of spreading infection: pus, red streaks extending from the toe, significant warmth, fever, or rapidly increasing swelling. People with diabetes or poor circulation should treat any ingrown toenail as urgent and see a podiatrist rather than attempting home care.
How do podiatrists treat ingrown toenails?
Podiatrists can lift and splint the nail edge, partially remove the ingrown portion under local anesthesia, or perform a matrixectomy (chemical or surgical) to permanently prevent recurrence. Most procedures take 10 to 15 minutes and provide immediate relief.
How can I prevent ingrown toenails?
Cut nails straight across (never round the corners), wear shoes with adequate toe room, do not pick or tear nails, keep feet clean and dry, and wear moisture-wicking socks.
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Expert Tips
- Soak first, always. Never attempt to place cotton or floss under a dry, unsoftened nail. Fifteen minutes in warm water with Epsom salt makes the skin pliable and reduces inflammation enough for gentle intervention.
- Use waxed dental floss, not regular. Waxed floss slides under the nail edge more smoothly and is less likely to fray and leave fibers behind. Unwaxed floss can shred and trap material in the wound.
- Replace the material daily. Old cotton or floss harbors bacteria. After each soak, remove the previous day’s material, clean the area, and place a fresh wisp.
- If it hurts to place the floss, stop. Pain during placement means the nail is too deeply embedded for this technique. Forcing it will increase trauma. See a podiatrist instead.
- Do not confuse “going viral” with “being safe.” The TikTok versions of this hack often show aggressive manipulation of visibly infected nails. The Mayo Clinic version involves gentle placement of a small wisp under a mildly ingrown edge. Those are fundamentally different procedures with fundamentally different outcomes.
Key Takeaways
- The viral dental floss ingrown toenail hack has divided podiatrists. The Mayo Clinic recommends it for mild cases. Cedars-Sinai and the American College of Foot and Ankle Surgeons warn against it for moderate or infected nails.
- The technique works only for mild cases: no broken skin, no infection signs, no significant swelling. Gentle placement of a small wisp of waxed dental floss or sterile cotton after soaking can guide the nail to grow above the skin edge.
- For infected, severely embedded, or recurrent ingrown toenails, the dental floss method can trap bacteria, introduce trauma, and worsen the condition.
- The five-step home protocol podiatrists agree on: warm soaks (15 to 20 minutes, two to three times daily), gentle cotton/floss placement (if mild), antibiotic ointment, open-toed footwear, and OTC pain relief.
- See a podiatrist if symptoms worsen after three to five days of home care, if infection signs appear, if the problem recurs, or if you have diabetes or poor circulation.
- Prevention centers on cutting nails straight across, wearing properly fitting shoes, and keeping feet clean and dry.
The Real Hack Is Knowing When to Stop
The dental floss technique is not a scam. It is a real clinical tool that the Mayo Clinic recommends and that podiatrists have used in various forms for decades. The problem is not the technique. It is the context in which TikTok presents it: without screening questions, without severity assessment, and without the caveat that makes the difference between healing and harm.
If your ingrown toenail is mild, soak your foot, gently place a wisp of waxed dental floss under the edge, apply ointment, wear open shoes, and check your progress in three to five days. That is the clinical version, and it works.
If your toenail is red, swollen, weeping pus, or throbbing through your shoe, close TikTok and call a podiatrist. The best home hack for an infected ingrown toenail is a phone call to someone with the sterile instruments and training to fix it properly.
If you found this article useful, share it with someone who has been debating whether to try the hack. You can also sign up for our newsletter for more evidence-based health content delivered to your inbox.
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References
AOL Health. (2026). How to fix an ingrown toenail at home: Does dental floss really work? https://www.aol.com/articles/fix-ingrown-toenail-home-does-160009000.html
Cedars-Sinai. (2026). How to treat an ingrown toenail. https://www.cedars-sinai.org/stories-and-insights/expert-advice/happy-feet-5-tips-to-remedy-ingrown-toenails
Certified Foot and Ankle Specialists. (2026). The warm water trick podiatrists use for ingrown toenails. https://certifiedfoot.com/ingrown-toenail-warm-soak/
Cleveland Clinic. (2024). Ingrown toenail? Try these home remedies. https://health.clevelandclinic.org/how-to-get-rid-of-ingrown-toenails
Mayo Clinic. (2025). Ingrown toenails: Diagnosis and treatment. https://www.mayoclinic.org/diseases-conditions/ingrown-toenails/diagnosis-treatment/drc-20355908
Pedicurian. (2020). DIY ingrown toenail relief: Dental floss method examined by podiatrist. https://pedicurian.com/blogs/pedi-notes/can-i-fix-an-ingrown-toenail-at-home-using-dental-floss
Straits Podiatry. (2026). Ingrown toenail home remedies: What actually works (and what to avoid). https://straitspodiatry.com/blog/ingrown-toenail-home-remedies/
Stride Foot & Ankle. (2026). Ingrowing toenails: Causes, relief, and treatment. https://stridefootankle.com/ingrowing-toenails-causes-relief-and-treatment/
Sutter Health. (n.d.). Ingrown toenail treatment. https://www.sutterhealth.org/ask-an-expert/answers/ingrown-toenail-treatment-1051061226
Yahoo Lifestyle. (2024). How to remove an ingrown toenail yourself + the dental floss hack that’s all over TikTok. https://www.yahoo.com/lifestyle/remove-ingrown-toenail-yourself-dental-131844165.html
