Born in Tychy, between 1982 and 1992 he worked with three amateur pantomime groups, most notably, "Scena Pantomimy", founded and led by Krosny.

He received several top awards at comedy festivals in Poland, and also had his own television shows there.

In the USA he received the Critic's Choice Award from The Chicago Reader: Polish mime Ireneusz Krosny draws more on the conventions of clowning than of abstract Marcel-Marceau-style white face mime, and his premises are rather generic—a conductor rehearses his orchestra, a dog owner adapts to his pet, a woman removes her finery at evening's end.

What renders these vignettes fresh and funny are Krosny's Red Skelton-like facial expressions and an elegant inventiveness that allows him to embellish yet keep the action free of extraneous material.

[...] A scene depicting a guest's reactions to a child's cello recital pulled the biggest laugh at the performance I attended, but action-movie fans like me will find the piece entitled "Arnold arms himself" irresistible.