The only prerequisite before buying a cream for treating keratosis is visiting a dermatologist for observation and provision of a prescription. Afterwards, there are many drug stores where the cream can be purchased. The cost of creams used in keratosis treatment is also relatively affordable compared with other methods of treating the conditions. Topical creams have been proven to be very good in treating senile keratosis. Compared to other methods of treating keratosis, creams have very little risk of causing scarring on the affected areas.
As when treating other patients with actinic keratoses the primary aim of treatment is to reduce the total number of lesions that the patient has at any one time, the fewer lesions a patient has the less risk they have for developing an SCC. Treatment courses will need to be repeated from time to time. Note that all field-based treatments will elicit local skin responses, which are expected as part of the treatment. The length of time a patient has to endure local skin responses varies widely between the treatments referred to below, and this needs to be discussed with the patient to aid them with the decision-making.