Keratoses: Apply twice daily until erosion occurs (usually 2–4 wks). Basal cell carcinoma (5% only): Apply twice daily, usually for 3–6 weeks (obliteration may take 10–12 weeks). Do not ...

Other types of cancer that aren't carcinomas invade the body in different ways. Those cancers begin in other types of tissue, such as: Basal cell carcinoma. This is the most common form of all ...