Black and traumatised nails

A discolored or darkened nail shouldn’t be ignored. In some cases, it’s simply a bruise caused by trauma. In others, it may indicate a fungal infection or an imbalance in the nail that requires special attention. In any case, it’s important not to leave room for doubt.

At PODERM, we help you identify the cause and choose the most appropriate treatment. Our targeted formulas, made with plant-based active ingredients, deeply regenerate the nail while respecting its natural structure. For visibly cleaner, healthier, and long-lasting protected nails.


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The strengthening serum for dark nails is specially formulated to reinforce and revitalize darkened nails. Dark nails often appear dull and fragile, requiring special care to restore their natural shine. Regular application of a strengthening serum for dark nails helps improve their texture and prevent breakage.

This serum penetrates deeply into the nail matrix to nourish and strengthen its structure. By incorporating this strengthening serum into your routine, you provide your nails with lasting protection against external aggressors.

For optimal results, use the strengthening serum for dark nails as part of a regular care routine. This product not only enhances the appearance of dark nails but also maintains their long-term health. Integrating this serum into your daily regimen ensures stronger, more radiant nails.
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Why is my toenail black?

A black toenail can be caused by trauma, such as a blow or excessive pressure from ill-fitting shoes. It can also result from bleeding under the nail or a build-up of blood, often linked to repeated injury or impact.

How do you treat a black nail?

To treat a black nail, use Poderm serum, specially formulated to strengthen and revitalise damaged nails. Apply the serum regularly to promote healing and restore the appearance of nails.

Why is my nail turning black?

A nail can turn black for several reasons. The most common are:

  • Trauma (impact, fall, sports) → bruise under the nail
  • Untreated fungal infection → thickened, brownish or blackish nail
  • Medication or deficiency → abnormal pigmentation
  • Prolonged pressure (tight shoes, long-distance running)

What treatment is there for a black nail?

It all depends on the cause:

  • Minor bruise: allow the nail to grow back naturally. Monitor its progress. You may apply the Poderm® Black Nails serum.
  • Nail fungus: apply the Poderm® Nail Fungus serum to stop the infection and regenerate the nail.
  • Thickened black nail: use the Poderm® Black Nails serum to cleanse and smooth the surface.

Can a black nail be concealed?

Yes, provided the cause is benign (trauma, fungal infection under treatment). PODERM offers:

  • Color Care treatment nail polish: for a clean and natural finish
  • Repairing Black Nails serums: help restore a clear, healthy, and strong nail

Tips to prevent black nails
  • Wear well-fitting shoes, especially during sports.
  • Cut your nails straight across, without rounding the corners.
  • Thoroughly dry your feet after showering.
  • Avoid repeated trauma (impact sports, high heels).
  • Apply PODERM® care regularly to strengthen the nail.

Why choose PODERM serums?
  • Formulated by a Swiss podiatrist
  • Natural and concentrated ingredients
  • Free from harsh essential oils
  • Clinically tested treatments
  • Effective from the very first applications

Are black nails always a sign of illness?

No. In most cases, it is a bruise or a fungal infection. However, if in doubt (persistent black line, bleeding), it is best to consult a doctor.

How to treat a black nail after trauma?

Let the nail breathe. Do not pierce the bruise. Apply a repairing treatment and monitor the regrowth. Sometimes the nail falls off — this is normal.

What natural treatments are available for a black nail affected by fungus?

A PODERM® antifungal serum, rich in purifying plant oils, gently treats the infection while regenerating the nail.

Can a black nail grow back normally?

Yes, if it is properly cared for and the matrix is not affected. It can sometimes take several months. PODERM® treatments help accelerate the repair process.

Our top tips for healthy nails

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