Claim: The treatment for blisteres caused by the South Afrian plant, Notobubon galbanum (commonly called the blister bush or hog's fennel), is by covering the area, applying sunscreen lotion, and reapplying the lotion as soon as itching starts again.
Evidence: Notobubon galbanum, re-classified from Peucedanum galbanum in 2008, commonly called the blister bush or hog's fennel, is a South African plant that is best known for its ability to cause painful blistering after contact. Apart from covering the area and preventing any exposure to sunlight, it is useful to directly apply sunscreen lotion as well. Reapply the lotion as soon as the itching starts again. Preventing the blister from forming is the best way to deal with the affliction.