A black spot on your nose that has lasted for a year requires a professional evaluation by a dermatologist before using any medication. It could be a harmless blackhead, a mole, hyperpigmentation, or, importantly, a lesion that needs to be screened for skin cancer. Please avoid applying random over-the-counter creams or trying to squeeze it, as this can cause infection or scarring. A dermatologist needs to examine it with a dermatoscope to provide an accurate diagnosis and prescribe the correct treatment, which might include topical prescription creams or a minor removal procedure. Please schedule an in-person evaluation soon.