It is composed of skin, muscles, mucous membranes, and connective tissue. The lips are highly sensitive and play a significant role in speech, eating, and facial expressions. The lips consist of two parts: the upper lip and the lower lip, separated by the oral fissure (mouth opening).

A blackhead is a clogged pore in the skin. Also known as comedones, blackheads can appear on the lip. They develop when dead skin cells and oil build up in the pore and form a dark plug. People often ...

You may be able to treat blackheads around the lips with products containing salicylic acid or retinoids, among others. If home remedies don’t work, you may need a dermatologist. Blackheads are tiny ...

Human lips are also a somatosensory organ, and can be an erogenous zone when used in kissing and other acts of intimacy.

The surface of the lip is comprised of four zones: hairy skin, vermilion border, vermilion and oral mucosa. The normal shape of the lips varies with age, and is influenced by ethnicity.

The meaning of LIP is either of two fleshy folds that surround the mouth in humans and many other vertebrates and are organs of human speech essential to certain articulations; also : the red or pinkish margin of the human lip.

Lip sores (ulcers) have various causes. A lip sore with hard edges may be a form of skin cancer (see Types of Oral Cancer; see also Lips and Sun Damage). Sores may also develop as a symptom of other medical conditions, such as erythema multiforme, recurrent oral herpes simplex virus infection (cold sores), or syphilis. Spots on the lips may occur.