Growths on the skin, also known as skin lesions, can be caused by a variety of conditions such as infections, inflammation, tumors, or trauma. Wens are a type of skin lesion that are benign, non-cancerous growths that are usually found on the face, neck, and scalp. They are typically small, round, and firm, and can range in color from yellow to white. Wens are usually harmless and do not require treatment, but they can be removed if desired.