Seborrheic Keratosis can be removed easily with common drug store wart remover. The gel kind works best. Apply a coating of the wart remover to the keratosis, being careful to cover only the keratosis. Reapply every other day for three or four times. Then leave it alone for a week or two until the dried wart remover starts to come loose. Then just peel the remover and the keratosis off.