The anti-callus balm Flexitol It has been formulated to soften areas where the skin is thickened. Its highly effective formula contains 22% urea, una selection of fruit acids (alfa hydroxy acids) and salicylic acid that penetrates deeply to exfoliate the skin and reduce corns, calluses, corns and hard skin, without damaging the healthy skin underneath. Regeneration. The first results can essere observed from the 3rd day.