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Sagot :
The five steps needed to induce permanent curls in hair by keratin are
I.A thiol containing reagent and Heating(gentle)
II. Disulfide bond Breaker for Keratin
III. curling the hair physically
IV.A good oxidizing agent application
V. Disulfide bonds reformer for keratin to hold the shape
Keratin is a protein that your body produces naturally, and it helps keep your hair, skin and nails healthy and robust. Your body produces keratin naturally, however keratin shampoos and conditioners that contain keratin protein could strengthen your hair and improve its look.
Keratin works by smoothing down the cells that overlap to make your hair strands. The layers of cells, referred to as the hair cuticle, in theory absorb the keratin, leading to hair that appears full and shiny. Keratin conjointly claims to form wavy hair less curly, to straighter in look.
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The shape of hair is determined in part by the pattern of disulfide bonds in keratin, its major protein. From first to last, arrange the five steps needed to induce permanent curls in hair.
Answers:
1. Keratin's a-helices convert to B-sheets.
2. Keratin's disulfide bonds break.
3. Physically curl the hair.
4. Apply an oxidizing agent.
5. Keratin's disulfide bonds reform to hold shape.
6. Apply a thiol-containing reagent and gentle heat.
7. Keratin's amino acids rearrange into the curled conformation.
To learn more about Keratin here
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