Demi-Permanent hair color uses what to develop the color molecules and aid in color processing?

Demi-Permanent hair color uses what to develop the color molecules and aid in color processing?

• A. Hydrogen peroxide 20 volume
• B. Water
• C. Low Volume Hydrogen Peroxide
• D. Ammonia solution

Answer: (C)

Demi-permanent color relies on a gentle oxidizing agent to activate the dye molecules just enough to deposit pigment without lifting the hair. Low-volume hydrogen peroxide provides that mild oxidation, allowing the color precursors to develop and bind in the cortex without significant lift. Water cannot develop color, ammonia would lift and create stronger color changes, and using higher-volume peroxide would also lift the hair—traits not desired for demi-permanent results.

Demi-permanent color relies on a gentle oxidizing agent to activate the dye molecules just enough to deposit pigment without lifting the hair. Low-volume hydrogen peroxide provides that mild oxidation, allowing the color precursors to develop and bind in the cortex without significant lift. Water cannot develop color, ammonia would lift and create stronger color changes, and using higher-volume peroxide would also lift the hair—traits not desired for demi-permanent results.