These treatment are suitable for superficial Basal Bell Carcinomas and Aktinic Keratoses. These immune response modifiers stimulate the immune system to destroy cancerous and pre-cancerous cells. They are applied nightly for two to six weeks. These creams can treat subclinical lesions, as well as the more obvious actinic keratoses. They are generally well tolerated when used as prescribed by our doctors. Redness and ulcerations may occur with these treatment but generally they are well tolerated.