The telltale feature of a seborrheic keratosis is its waxy, stuck-on, greasy look. Seborrheic keratosis can almost be peeled or scraped off the skin while moles are not easily scraped. Seborrheic keratoses look like they have either been pasted on the skin or may look like a dab of melted brown candle wax that dropped on the skin. Seborrheic keratosis may occur in the same areas as moles. Seborrheic keratoses are also more common in areas of sun exposure, but may rarely occur in doubly sunprotected areas like the underwear area. When they first appear, the growths usually begin one at a time as small rough bumps. Eventually, they may thicken and develop a rough, warty surface.