The “dark hole” is one of the most common blonding challenges, especially when clients want brightness to sit higher while maintaining dimension. Sectioning pattern, foil spacing and the way each foil connects through the back of the head all influence whether the finished result looks seamless or reveals darker pockets. Below, Ciarra Russo (
@colorbyciarra), BTC Team Member, custom color expert and educator, shares the foil pattern she uses to eliminate the “dark hole,” connect brightness through the back of the head and preserve soft, natural-looking dimension. But first, move the slider to see the before and after: Formulas Move your
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