How long does demi-permanent color typically last?

• A. 2-3 weeks
• B. 4-6 weeks
• C. 8-12 weeks
• D. 1-2 weeks

Answer: (B)

Demi-permanent color is designed to deposit pigment without lifting the hair, and the color gradually fades with each shampoo as the cuticle closes and pigment molecules exit the cortex. Because it’s a lighter, more temporary deposit than permanent color, its typical lifespan is about 4–6 weeks. How long it lasts can vary with how often you wash, the shampoos you use (clarifying or sulfates can fade color faster), your hair’s porosity and condition, and how quickly your individual hair sheds pigment. Shorter times like 1–2 weeks or 2–3 weeks are usually too brief, while 8–12 weeks is longer than most demi-permanent formulations.