Sebaceous hyperplasia is a common skin condition that causes small, waxy bumps to form on the skin. These bumps are caused by the enlargement of sebaceous glands, which are the glands that produce oil (sebum) to keep your skin lubricated.Sebaceous hyperplasia is most commonly found on the face, particularly on the forehead, nose, and cheeks. … Continue reading Sebaceous Hyperplasia: Harmless Bumps or Cosmetic Concern