With which perm does the hair start to process as soon as the solution is applied?

With which perm does the hair start to process as soon as the solution is applied?

• A. Alkaline perms
• B. Acid perms
• C. Neutral perms
• D. Thermal perms

Answer: (A)

Processing starts as soon as the solution hits the hair when using an alkaline perm. The high pH lifts the cuticle and allows the reducing agent to begin breaking and rearranging the disulfide bonds right away, so chemical action begins immediately on contact. Acid perms need heat to trigger the processing and typically take longer to develop. Neutral perms have a milder pH and progress more slowly, often without added heat. Thermal perms rely on external heat to drive the chemical changes, so they don’t start until heat is applied.

Processing starts as soon as the solution hits the hair when using an alkaline perm. The high pH lifts the cuticle and allows the reducing agent to begin breaking and rearranging the disulfide bonds right away, so chemical action begins immediately on contact.

Acid perms need heat to trigger the processing and typically take longer to develop. Neutral perms have a milder pH and progress more slowly, often without added heat. Thermal perms rely on external heat to drive the chemical changes, so they don’t start until heat is applied.