Corns are a common skin issue, characterized by localized areas of hardened skin that develop in response to repeated pressure or friction. Salicylic acid is a widely recognized over-the-counter treatment for corns, used to soften and remove thickened skin.
What Are Corns?
Corns are localized areas of thickened, hardened skin that form on the feet. They arise as a protective response to repetitive mechanical stress, such as pressure from ill-fitting shoes or friction from walking. These formations often develop over bony prominences, appearing on the tops or sides of toes or on the soles of the feet. They can cause discomfort or pain, especially when pressure is applied.
How Salicylic Acid Breaks Down Corns
Salicylic acid acts as a keratolytic agent, meaning it dissolves keratin, the primary protein component of skin and the substance that makes up the hardened tissue of a corn. When applied to a corn, the acid penetrates the outer layers of the skin. It works by loosening the bonds between the cells in the corn, allowing their gradual separation.
This process leads to the softening and eventual breakdown of the thickened, dead skin cells. The corn then begins to exfoliate, layer by layer. Consistent application over several days or weeks allows for the progressive reduction in the size and thickness of the corn as the outer layers are shed. The gradual removal of the excess keratin helps to flatten the corn and alleviate associated discomfort.
Safe Application of Salicylic Acid
Salicylic acid treatments for corns are available in various forms, including medicated pads, liquids, and gels. Before applying any product, the affected area should be cleaned and dried. Apply the salicylic acid directly onto the corn, carefully avoiding contact with surrounding healthy skin.
Applying a protective barrier, such as petroleum jelly, around the corn can help prevent irritation to healthy skin. Users should follow the specific instructions provided with their chosen product regarding application frequency and duration. Salicylic acid should not be used on broken, irritated, or infected skin due to the risk of further damage or systemic absorption.
When to Consult a Doctor
While salicylic acid is effective for many corns, certain situations warrant professional medical evaluation. Individuals experiencing severe pain, bleeding, or signs of infection around the corn, such as redness, swelling, or pus, should seek medical attention. People with underlying health conditions, particularly diabetes, poor circulation, or a compromised immune system, should consult a doctor before attempting self-treatment. These conditions can impair healing and increase the risk of complications.
References
1. Salicylic Acid for Corns: How It Works and How to Use It. Medical News Today. [https://www.medicalnewstoday.com/articles/salicylic-acid-for-corns](https://www.medicalnewstoday.com/articles/salicylic-acid-for-corns)
2. Salicylic Acid for Corns: What You Need to Know. Healthline. [https://www.healthline.com/health/salicylic-acid-for-corns](https://www.healthline.com/health/salicylic-acid-for-corns)
3. Corns and Calluses. Mayo Clinic. [https://www.mayoclinic.org/diseases-conditions/corns-and-calluses/diagnosis-treatment/drc-20352197](https://www.mayoclinic.org/diseases-conditions/corns-and-calluses/diagnosis-treatment/drc-20352197)