What is it?

Salicylic Acid is an active ingredient used in the Hansaplast Corn Plaster (and Elastoplast Callous Plaster). Salicylic Acid is a well-established and accepted ingredient in the treatment of calluses and corns. It softens the calloused layer of the skin as well as the cornified epithelium (the core of the corn) and interacts with cellular constituents and intercellular substances of the outer skin layer to promote the detachment of the skin cells (corneocytes).

Working principle

The effect of salicylic acid can be found in the upper layers of the skin. The acid acts by loosening the intercellular structure, which holds together the horny cells in the corn. This leads to an increased hydration, which causes the corn to swell, and soften (a process called keratolytic action) – thus, the mechanical removal of the skin cells is facilitated. The plaster should be applied to dry, clean skin and worn for two days. Results should show after four days. For more info, click here.

What are corns?

Corns arise if the skin is exposed to permanent, punctual pressure. The skin then reacts by building up a thicker horny area (callous skin) to protect itself from the pressure. If the punctual pressure on the skin persists, the callous skin builds up and develops into a corn. Finally, at the central point of the highest pressure, a small cone-shaped mass of callous skin is formed.

Causes for corns

Punctual pressure is one of the main reasons for corns to develop. The pressure on the skin’s feet from the outside faces the resistance from the body’s bones usually in combination with some friction, for example when toes rub against footwear. Hence, the main causes for corns are ill-fitting footwear, tight hosiery, standing for a long time, flat feet, bony abnormalities and abnormal walking motion.