Used as a potent immune response modifier, particularly in dermatological treatments. It acts as a Toll-like receptor 7 (TLR7) agonist, stimulating the body’s innate immune system to fight viral infections and certain types of skin cancers. Commonly formulated in topical creams for the treatment of external genital warts, actinic keratosis, and superficial basal cell carcinoma. Its ability to induce local cytokine production makes it effective in lesion clearance with minimal systemic absorption. Also under investigation for use in other immune-mediated skin disorders and as an adjuvant in vaccine development due to its immunostimulatory properties.