Which perm type is associated with minimal swelling and requires careful wrapping?

Which perm type is associated with minimal swelling and requires careful wrapping?

• A. Acid
• B. Alkaline
• C. Neutral
• D. Extreme

Answer: (A)

Acid waves are milder in their action, so they cause minimal swelling as the hair processes. That limited expansion means the hair doesn’t fill the space around the rods as aggressively, making precise wrapping essential to keep every strand in place and to avoid gaps, overlaps, or uneven curl. When wrapping is done carefully, the milder chemical can form a smooth, uniform curl after neutralization. In contrast, alkaline formulas swell more and are less forgiving of wrap errors, while neutral formulas fall in between, so the emphasis on careful wrapping is greatest with the milder, acid-type perm.

Acid waves are milder in their action, so they cause minimal swelling as the hair processes. That limited expansion means the hair doesn’t fill the space around the rods as aggressively, making precise wrapping essential to keep every strand in place and to avoid gaps, overlaps, or uneven curl. When wrapping is done carefully, the milder chemical can form a smooth, uniform curl after neutralization. In contrast, alkaline formulas swell more and are less forgiving of wrap errors, while neutral formulas fall in between, so the emphasis on careful wrapping is greatest with the milder, acid-type perm.