After the neutralization step, what is restored in the hair?

After the neutralization step, what is restored in the hair?

• A. Disulfide bonds are rebuilt to set the curl pattern and restore strength.
• B. The cuticle is removed.
• C. Hair is dyed.
• D. Water is added to hair.

Answer: (A)

Neutralization re-forms the disulfide bonds that were broken earlier, locking in the new curl and restoring the hair’s strength. When the reducing agent breaks those bonds, the hair can be reshaped; the neutralizer then oxidizes the thiols back into disulfide bonds, re-establishing the covalent network that holds the curl pattern in place. The cuticle isn’t removed during this step, and coloring isn’t happening here; the emphasis is on rebuilding the bond structure that gives hair its shape and strength. Water itself isn’t the restoration focus, though rinsing is part of the process.

Neutralization re-forms the disulfide bonds that were broken earlier, locking in the new curl and restoring the hair’s strength. When the reducing agent breaks those bonds, the hair can be reshaped; the neutralizer then oxidizes the thiols back into disulfide bonds, re-establishing the covalent network that holds the curl pattern in place. The cuticle isn’t removed during this step, and coloring isn’t happening here; the emphasis is on rebuilding the bond structure that gives hair its shape and strength. Water itself isn’t the restoration focus, though rinsing is part of the process.