Savlon Blister Plasters Savlon Blister Plasters are designed with a special cushioned pad to shield & protect blisters from painful rubbing, absorbing excess fluid, while at the same time making sure the area is kept moist enough for the blister to heal. Savlon Blister Plasters are hypoallergenic & latex free & can even be used to stop blisters from occuring in the first place.