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