Calendula
Calendula , pot marigold, is a genus of about 12–20 species of annual or perennial herbacessential oilsus plants in the daisy family Asteraceae as shown in figure 4. Calendula in suspension or in tincture is used topically to treat acne, reducing inflammation, controlling bleeding and soothing irritated tissue.[11] There is "limited evidence" that calendula cream or ointment is effective in treating radiation dermatitis.[12,13] In a randomized study of 254 radiation patients, topical application of 4% calendula ointment resulted in far fewer occurrences of Grade 2 or higher dermatitis than occurred in the group using trolamine. Calendula users also experienced less radiation-induced pain and fewer breaks in treatment