Atlas · Chapter
Eyebrow.
Eleven markers that frame every other feature — and one of the highest-leverage zones we read.
markers in this chapter
11
read time
7 min
why this region
The argument for reading eyebrow carefully.
Brows organize the upper face. Subtle adjustments to arch, density, and trajectory move how the eye reads more than any other non-surgical intervention. We meet many readers whose top finding is a brow note — and whose entire face shifts after six weeks of consistent grooming.
every marker, in this chapter
The full list.
marker
what we measure
healthy range
Arch height
Vertical lift at peak
5–10mm above lid
Arch position
Lateral location of peak
outer 2/3
Tail trajectory
End-point relative to outer canthus
level or slightly above
Density · medial
Hair count at brow head
high preferred
Density · lateral
Hair count at brow tail
tapered
Inter-brow gap
Distance between brow heads
≈ eye width
Brow thickness
Average vertical depth
4–8mm
Hair angle
Direction of growth
upward + outward
Symmetry · L/R
Inter-brow height delta
< 1.0mm
Color contrast
Brow vs hair vs skin
Δ 0–2 shades
Edge cleanliness
Stray hairs above + below
minimal
Six weeks of patient work changes more than people expect.
See what mine asks for