exposing their hair to saltwater or chlorinated water.The combination of chemicals, blow-drying, and flat ironing accelerates the cross-linking and turns curly or wavy hair straight.Īfter a keratin hair treatment, a person should avoid washing their hair for at least 2 days. The chemicals in keratin hair treatments target the keratin strands and alter their form.ĭuring a keratin hair treatment, a stylist applies a keratin-based product to the hair and then uses a flat iron to seal it in.ĭepending on hair thickness or length, as the chemicals diffuse into the hair, they alter the cross-linking of the keratin strands. Groups of these helical strands form filaments, which are the bulk of the cortex. Within the cortex, keratin forms a long helical chain with the help of chemical bonds, such as ionic bonding, disulfide bonding, and hydrogen bonding.Īlso, weaker forces of attraction between molecules, which experts call van der Waals forces, can help maintain the a-helical keratin structure. Cuticle: This thin protective outer layer consists of keratinized cells that overlap like scales.It contains proteins and provides mechanical support. Cortex: This is the main component of hair.Medulla: This is located in the core of the hair fiber and can only be seen in larger or thicker hairs.Hair fibers consist of three main regions: It helps give structure and strength to the hair, skin, and nails. Keratin is a protein that the body produces naturally. A keratin hair treatment is a process that helps straighten and smooth frizzy or damaged hair.
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