HairFactz Definitions
Some words have more than one meaning. Only those meanings relating to this site will be used.
All Definitions
Keloid
Pronounced - KEY-loyd
A keloid is an overgrowth of scar tissue at the site of a healed skin injury. Also called hypertrophic scar or keloid scar.
Keratin
Keratin is an extremely tough protein substance found in hair, finger nails, skin, and cornea of humans, and feathers, horns, and hooves of animals.
Keratinocytes
Cells that synthesize keratin and are found in the skin, hair, and nails. A fibrous protein is produced by keratinocytes and may be hard or soft. The hard keratin is found in hair and nails. The soft keratin is found in the epidermis of the skin in the form of flattened non-nucleated scales that slough continually.
Kinked
Hair that is closely curled or twisted.