Table of Contents
How does perm affect hair structure?
In a standard “cold” perm, hair is put into curlers and the reducing agent ammonium thioglycolate is added. The disulfide bonds break and keratin molecules are now free to move around and adjust to the shape of the curl. New disulfide bonds form so the keratin molecules are locked into the shape of the curls.
What happens to your hair after a perm?
Does getting a perm hurt your hair? A perm isn’t as detrimental to your hair health as bleaching. But the process may weaken and dry strands, according to a PeerJ study. If you already have damaged hair, you may be more prone to a brittle feel or even breakage.
What is the effect of neutralisers on the hair structure?
The main action of a neutraliser is to FIX the curl in place. In perming the neutralizer causes oxidation of the hair which allows it to fix in a beta keratin state. Without this action the curl would NOT survive!
What does pre perm treatment do to the hair structure?
The Wella Pre-Perm Treatment prepares hair for perming by supporting the formation of waves whilst simultaneously smoothing hair fibres. Through this smoothing process, Wella Pre-Perm Treatment actively controls the levels of porosity within the hair structure.
How does perm lotion affect the structure of hair?
Then the hair is restructured into the desired appearance. The hair is composed of keratin, which at its most basic form is a protein structure that features many bonds to give hair its strength and ability to move. When permanent lotion is applied to straight hair using a permanent wave method, the cystine and sulphur bonds of the hair are broken.
Why is it bad to wash your hair after Perm?
Because the cuticle is disturbed by both the curling and straightening process, hair is far more fragile after chemical treatment. It should not be washed or overly styled while the new peptide bonds are still easily broken. This could result in loss of the new style or hair breakage.
What happens to the hair during the perming process?
Once this happens the hair is in a state to change to the new shape of the perming rod. During the moulding phase of the perming process the disulphide bonds are broken. This is the final stage of the perming process. Once the processing is complete and the perm lotion has been removed, a neutralising product is applied.
What happens if you leave Perm on too long?
Because a neutralizer can damage the hair if too much is applied or if it is left on for too long, the stylist must closely monitor the perm process. The neutralizer re-establishes the bonds in their new shape, whether wavy, curly or ringlets. The stylist should thoroughly wash away the neutralizer to prevent any damage.