How Fast Does Eyebrow Hair Grow Back?

For most adults, eyebrow hair grows at a rate of approximately 0.16 mm per day, or a quarter of an inch per month. Eyebrow hair removed via plucking or waxing takes up to 64 days to fully regrow, whereas shaved eyebrows grow back much sooner.

References

• Hair Biology
• Eyebrow Hair Growth
• Bernstein Medical: Hair Growth