thanks for your patience.
It seems to be a cutaneous horn.
A cutaneous horn (cornu cutaneum) is a hard conical projection from the skin, made of compact keratin. They are so named as they resemble an animal’s horn. They arise from benign, premalignant or malignant skin lesions.
Around half of horns have a benign base, and half are premalignant or malignant. The most common underlying lesions are seborrheic keratosis, viral wart (due to human papillomavirus), actinic keratosis and well-differentiated squamous cell carcinoma.
Its difficult to say what is the underlying pathology just on examination.
i would recommend that you visit your dermatologist who can excise it for you and send the specimen for testing in the laboratory. that will give an idea regarding the underlying pathology. Application of cream will not be helpful in your case.
Please let me know if you have any queries.
Hope my recommendations are helpful.