Which term describes permanent color?

• A. Direct dye
• B. Demi-permanent color
• C. Temporary color
• D. Oxidative tints with ammonia

Answer: (D)

Permanent color uses an oxidative dyeing process. The developer oxidizes dye precursors and, with the alkaline environment created by ammonia, opens the hair cuticle so pigment can enter the cortex and form lasting bonds. This produces color that remains through many shampoos and grows out with the hair. Direct dye is non-oxidative and sits on or just inside the cuticle, fading quickly. Temporary color sits on the surface and washes out after a few washes. Demi-permanent color uses some oxidation but with little or no ammonia, so it doesn’t lift the cuticle as aggressively and fades over time. So, the term that describes permanent color is the oxidative process that involves ammonia.