Cocoon is a long-term extrusion and friction accumulation of the cuticle of the skin that has lost its growth ability. The thickness is generally about 0.5 mm. The calluses are generally waxy yellow, flat or slightly raised, with localized horny hypertrophy patches, hard and slightly transparent, unclear boundaries, thick center and thin edges. It usually occurs in the palm and soles of the feet and is usually symmetrical. The compressed part can see people who are related to their careers. Generally no symptoms. In severe cases, there may be tenderness.

It is not recommended to remove calluses by cutting, tearing and grinding stones, because these aspects can remove calluses on the surface, but in fact these physical stimulation methods will stimulate calluses to proliferate faster and thicker. With this beginning, we will often deal with calluses in the future.

Biofilm cocoon removal is a safe, painless and non-irritating method for callus proliferation.