Just like we brush our teeth every day and after meals to remove the food particles lodged between the teeth and to keep them healthy, the penis fore skin also has to be retracted and this makes the closed surface exposed and enables it to be cleaned. One must clean this at every bath and also at passing urine. One must NOT use any soap for cleaning it as it is irritant to the sensitive skin. There are special cells in the inside of the foreskin which produce a sticky whitish cream like substance called smegma. This coats the glans and helps prevent it from getting infected. But it must be removed everyday, and if ir remains there due to inability to clean the surface due to tight phimosis, it will catch infection and cause red spots.