Why does the base area lighten faster when using a midstrand-to-ends then base (lighter result) technique?

Why does the base area lighten faster when using a midstrand-to-ends then base (lighter result) technique?

• A. Increased product concentration at the base
• B. Additional body-heat at the base area
• C. Longer processing time at the base
• D. Lower porosity at the base area

Answer: (B)

Heat is the main driver of lightening speed. The base area sits directly on the scalp, where body warmth creates a hotter environment for the lightener to work in. When you apply lightener midstrand-to-ends first and then the base, the base quickly benefits from that scalp heat, so the chemical reaction happens faster there. That extra warmth at the base accelerates lift, giving a lighter result at the base compared to the midlengths and ends. Why the other ideas don’t fit: simply using more product concentrate at the base isn’t the mechanism here, and processing time or timing alone wouldn’t selectively speed the base without affecting the other sections. Porosity can influence lift, but the described effect this technique leverages is primarily the added heat from the scalp at the base.

Heat is the main driver of lightening speed. The base area sits directly on the scalp, where body warmth creates a hotter environment for the lightener to work in. When you apply lightener midstrand-to-ends first and then the base, the base quickly benefits from that scalp heat, so the chemical reaction happens faster there. That extra warmth at the base accelerates lift, giving a lighter result at the base compared to the midlengths and ends.

Why the other ideas don’t fit: simply using more product concentrate at the base isn’t the mechanism here, and processing time or timing alone wouldn’t selectively speed the base without affecting the other sections. Porosity can influence lift, but the described effect this technique leverages is primarily the added heat from the scalp at the base.