Seborrheic keratosis Seborrheic keratosis is a type of skin development. They can be invasive, but growth is not harmful. However, in some cases, seborrheic keratosis can be difficult to differentiate from melanoma, a very serious type of skin cancer. Natural Remedies for Seborrheic Keratosis Keratosis is an unnecessary development of keratin, a skin protein, on the skin. There a change of...