2 in 1 corn express penhow is the scholl 2 in 1 corn express pen differentthe new scholl 2 in 1 corn express pen is a unique highly effective and fast acting way to treat corns it is reusable and will treat multiple cornsrelieves pain associated with reducing thickness and therefore pressure of the cornwhat are cornscorns are amongst the most common problems to affect the feet corns are a thickening of the skin in response to pressure the thickened skin