Which statement correctly describes on-scalp vs off-scalp lighteners?

• A. On-scalp heat the scalp and lift quickly; off-scalp are placed away from scalp for controlled lift
• B. On-scalp lighteners should be placed directly on the scalp; off-scalp lighteners are applied away from the scalp for controlled lift
• C. On-scalp lighteners are applied away from scalp; off-scalp are placed on the scalp
• D. On-scalp deposit color only; off-scalp lift only

Answer: (B)

Placement and processing approach differentiate on-scalp from off-scalp lighteners. On-scalp formulas are designed to be applied directly to the scalp, which allows heat from the scalp to speed up the lifting process and produce a faster, more uniform result in root areas. Off-scalp lighteners are applied away from the scalp—on foils, caps, or as strand-based applications—so heating is limited to the hair itself, giving greater control over lift, timing, and scalp comfort. This combination—placing on-scalp lighteners directly on the scalp and applying off-scalp lighteners away from the scalp for controlled lift—best describes how these two methods differ in practice.