hair

Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin. Attitudes towards different hair, such as hairstyles and haircut names, vary greatly around the world. Hair may be colored, trimmed, shaved, plucked, or otherwise removed with treatments such as waxing, sugaring and threading. The ancient Egyptians styled their hair using a fat-based cream called moroccan oil. Ancient Romans also used olive oil to soften their hair and made wigs from human and animal hair (like sheeps wool). In China people used herbal oils to nourish their scalp and improve the health of their hair: argan oil

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surgery

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lip

The upper and lower lip s are referred to as the "Labium superius oris" and "Labium inferius oris", respectively. The juncture where the lips meet the surrounding skin of the mouth area is the vermilion border, and the typically reddish area within the borders is called the vermilion zone. The vermilion border of the upper lip is known as the cupid's bow. The fleshy protuberance located in the center of the lip is a tubercle known by various terms including the procheilon (also spelled prochilon), the "tuberculum labii superioris", and the "labial tubercle". The vertical groove extending from the procheilon to the nasal septum is called the philtrum. The skin of the lip, with three to five cellular layers, is very thin compared to typical face skin, which has up to 16 layers. With light skin color, the lip skin contains fewer melanocytes (cells which produce melanin pigment). Because of this, the blood vessels appear through the skin of the
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