Kerasal Nail Warnings and Side Effects

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Kerasal is the brand name for the topical emollient salicylic acid. Typically, Kerasal is used to soften or remove hard, callused, or scaly skin from the feet. However, it is also marketed for use in improving discolored or thinned appearances of nails post fungal infection.

As with many topical treatments, Kerasal has precursory risks that must be considered prior to usage. This article looks at Kerasal Nail Warnings and Side Effects. Read on to learn what you need to be aware of with this product.


Kerasal Nail Warnings: Who Should Not Use Kerasal

For most, Kerasal products will be harmless and can aid in relieving their symptoms. It is an Over the Counter treatment, and while it doesn’t cure toenail fungus, it works pretty well at softening toenails.

That said, there are certain groups of individuals who cannot use Kerasal due to the associated health risks. 

These include:

  • Pregnant women should not use this product without prior assessment and consultation with a doctor.
  • Developing children/teenagers should not use this product if they have recently had (or currently have) chickenpox, fever, or flu symptoms. This has been linked to the development of Reye’s Syndrome in this age group, which can be fatal.
  • Those with a history of liver and/or kidney disease must liaise with a pharmacist or doctor before using this product.
  • Any child under the age of 2 should not use Kerasal products due to the associated health risks it would pose to them.
  • Those already using topical steroids or medications to treat foot/nail concerns should seek medical advice prior to using Kerasal to ensure there is no risk of polypharmacy or drug interaction concerns.

Generally, all healthy individuals who do not fall into the above groups should be able to use Kerasal products without issue. However, if concerned, you should consult a medical professional before use.

Kerasal Side Effects

As with any medication, even OTC ones, there comes a risk of some side effects. Although small, these must be noted and dealt with immediately if they appear.

Such side effects can include:

  • If the product burns, itches, or irritates the skin, it is advised that you remove Kerasal from the affected area and cease its usage.
  • If redness or severe skin irritation is present and non-resolving post removal of the Kerasal product, then you must contact your doctor immediately.
  • Any sign of a more serious allergic reaction (such as difficulty breathing, hives, and swelling of facial features) must be dealt with immediately by seeking emergency medical care.

It is worth noting that it is possible for other side effects (other than those listed above) can occur, and if you notice something odd, you should seek consultation with your doctor or emergency medical attention.

Overdoses of Kerasal Products

If used correctly, Kerasal products will typically be harmless. However, if salicylic acid (Kerasal) is ingested in any quantity, you should seek emergency medical treatment or contact a poison helpline if available in your location.

If used long-term or in higher doses than recommended, an overdose of Kerasal nail products can occur due to the absorption of the product through the skin. This can bring on symptoms such as dizziness, loose stools, difficulty breathing, confusion, and vomiting. As above, if a suspected overdose is present, then you should seek emergency medical treatment.

General Usage Warnings

Kerasal products are, like many topical treatments, partially flammable. This leads to associated risks when being used in higher doses. In such cases, it is advised that Kerasal nail products are not used near any open flame or while smoking. Post-usage, it is advised that the area be treated and the hands are washed thoroughly to avoid any risk of flammability.

You should not smoke for 1-hour post-application of Kerasal products due to the flammable nature of the product.

Exposure to Kerasal in the eyes, nose, mouth, rectum, or vagina should be avoided. If accidental exposure does occur, these areas should be washed thoroughly with water. If symptoms are exhibited after exposure to these areas, it is recommended to seek medical advice.

It is advised not to use other topical treatments in the same region due to the possible interaction of drugs.


As with any medication, there are attached risks. The above list of warnings should guide the most common hazards when using Kerasal products and what to do should you encounter any issues.

It is important to note that the above advice is purely informative, and if you have any concerns prior to, during usage, or post usage of Kerasal products, it is vital you speak to a qualified medical professional to conform that Kerasal is appropriate for you.

Written by Kayla Young

Kayla is the founder of LuxeLuminous. She has worked professionally in the tanning industry for years. She has been interested in esthetics since childhood, and has tried every hair, skin, and makeup product ever produced (more or less).