Which service changes tightly curled hair to curly or wavy hair?

• A. Curl reform/double process perm
• B. Virgin thio relaxer
• C. Neutralizing shampoo
• D. Protective base cream

Answer: (A)

When changing hair texture with chemicals, the curl pattern is altered by breaking and re-forming the hair’s disulfide bonds. A curl reform/double process perm is specifically used to convert very tight curl into looser curl or wave by a two-step approach: first relaxing or loosening the existing curl, then re-forming new bonds in a looser pattern. This re-curling creates curlier or wavier hair from hair that was tightly curled. The other options don’t fit because a virgin thio relaxer straightens or relaxes to less curl or straightness, a neutralizing shampoo stops processing and rebuilds bonds after a chemical service, and a protective base cream shields the scalp during treatment rather than changing the curl pattern.