Compléter Ch 11 Properties of Hair & Scalp (D)Version en ligne Chemical Composition par Shawanna Whidbee 1 follicle composed protein originating Hair is of that grows from cells within the hair . 2 maturation keratinization cells The of these is called . 3 five nails elements elements COHNS skin Together , the that make up human hair are referred to as the to help people remember them ; they are also found in the and the . 4 dries hydrogen cross bond link broken heat water A is a weak , physical , - side bond that is easily by or ; these bonds reform when the hair . 5 bonds salt polypeptide Weak bonds side , physical , cross - linked between adjacent chains are . 6 waves permanent disulfide chemical bonds relaxers The hairs strongest side bonds ; are broken through and . 7 Eumelanin Melanin pigment Pheomelanin are the tiny grains of in the cortex that give natural color to the hair ; and . 8 wave curly extremely shape wavy pattern straight The of hair refers to the of the hair strand and is described as , , , or curly . 9 anyone straight curly African Asian varying curl Native extremely extremely and Americans tend to have hair , while American ? s tend to have hair ; however of any race , or mixed race can have hair with degrees of . 10 often low curly elasticity Extremely hair has .