T-Section Highlights and Lowlights

A: T-section highlights and lowlights are a hair coloring technique that focuses on approximately one-fourth of your head, specifically targeting the top and crown areas where your hair naturally parts and frames your face. The name "T-section" comes from the T-shaped pattern created when you section off the hair from ear to ear across the top of your head and then straight back from your forehead to the crown.
However, the impact of T-section coloring on your overall appearance can be quite significant, even though it covers a smaller area than full-head highlighting. Since the colored sections are positioned around your face and part line, they catch light naturally and create dimension where it's most visible. When you style your hair, pull it back, or even just move throughout your day, these strategically placed colors will be the most noticeable, giving you maximum visual impact with minimal coverage.
For your specific interest in reddish lowlights, this technique would work beautifully with your medium brown base color. Lowlights are darker than your natural color and add depth and richness, while reddish tones will bring warmth and complement the natural undertones in brown hair. The T-section placement means these rich, warm lowlights will frame your face and add sophistication to your overall look. Red-based lowlights in shades like auburn, copper, or deep burgundy can create a stunning contrast against medium brown hair while maintaining a natural appearance.

The maintenance schedule for T-section lowlights is more manageable than full-head color. Depending on how fast your hair grows and how noticeable you want the color to remain, you'll likely need touch-ups every eight to twelve weeks.
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See also:
Highlights
What are peek-a-boo highlights?
What are shoe shine highlights?