physical changes that take place within hair structure when styling hair
TRANSCRIPT
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Physical changes that take place within hair structure
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The physical changes that take place within the hair structure
• Alpha keratin is when hair is in its natural shape
• Beta keratin is when hair has been set or blow-dried into a new shape
• Hair will remain in beta keratin until it is washed or moisture from the air attacks the hair then it will then return to Alpha keratin
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Poly peptide chain
• This is made up of keratin
• The keratin is a combination of -
• Carbon
• Hydrogen
• Oxygen
• Sulphur
• Nitrogen
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The physical changes that take place within the hair structure
• Alpha keratin is when hair is in its natural shape
• Beta keratin is when hair has been set or blow-dried into a new shape
• Hair will remain in beta keratin until it is washed or moisture from the air attacks the hair then it will then return to Alpha keratin
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Hydrogen bonds
• These are temporarily broken during the setting or blow-drying process
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Wet setting
• Shampoo the hair to ensure it reverts back to its original state (alpha keratin) as the hydrogen bonds will break when water enters the cortex
• During the setting or blow-drying process hair is changed to beta keratin and will stay this way until it is shampooed again or until attacked by moisture from a humid environment
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Dry setting
• You would not shampoo hair before a dry set and the bonds are not as easily broken
• By applying styling products in conjunction with heat a few bonds will be broken and give a much softer curl
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Humidity
• This is moisture in the air and as hair has the ability to absorb moisture in a very humid environment this would attack a hairstyle and it would loose its shape due to the hair shaft swelling taking the hair back to alpha keratin
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Allow hair to cool prior to dressing out
• This allows the hydrogen bonds to fix into their new state of beta keratin. It will also allow the style to last longer