Eyebrows usually start growing back within a few weeks, but getting them “fully back” can take a few months.

Quick timeline

  • First visible regrowth: about 2–4 weeks after plucking or waxing, you may see short new hairs breaking through the skin.
  • Reaching normal hair length: often around 6–8 weeks for those new hairs to grow to their full length.
  • Full eyebrow density/shape: commonly 2–4 months, and in some cases up to about 6 months or a bit longer, depending on your natural growth cycle.

What affects how fast they grow back

  • Cause of loss: over‑plucking or waxing from healthy follicles usually grows back in the 2–4 month range; damage from years of over‑plucking, scarring, or some medical conditions can slow growth or stop it altogether.
  • Follicle health: if the hair follicle and its stem cells are intact, hair can begin to regrow within 2–3 weeks and then fill in over the next couple of months.
  • Your personal hair cycle: eyebrow hairs have a short growth (anagen) phase of about 30–45 days, followed by transition and rest phases that can last several months.
  • Age, hormones, and health: thyroid issues, nutritional deficiencies, certain medications, and stress can all slow or reduce regrowth.

When to be patient vs. when to worry

It is normal for brows to look patchy for a month or two after a heavy pluck or wax; many people don’t see them “back to normal” until around the 3–4 month mark. If after about 4–6 months you see little or no regrowth in certain areas, or your brows keep thinning without obvious grooming, it’s worth asking a dermatologist or primary‑care doctor to rule out conditions like alopecia, thyroid disease, or skin disorders.

Gentle tips that can help

  • Stop plucking or waxing completely for at least 3–4 months to let the full growth cycle run.
  • Avoid aggressive rubbing or harsh exfoliation on the brow area to protect the follicles.
  • Keep the skin and hair moisturized with a bland, non‑irritating product (like a simple emollient) and consider a cosmetic brow serum if your skin tolerates it, understanding that results vary.
  • Use makeup (pencils, powders, tints) or techniques like tinting or microshading if you want a fuller look while you wait, but make sure any procedure is done by a trained professional.

Forum‑style perspective

On beauty and grooming forums, you’ll see a wide range of experiences:

  • Some people report that their brows look noticeably better after about 8–10 weeks of “hands‑off” growing.
  • Others, especially those who over‑plucked through the 2010s thin‑brow trend, say it took 6–12 months of patience plus topical serums or professional treatments to feel satisfied with their brows again.

TL;DR: you’ll usually see new brow hairs within a month, but expect 2–4 months (and sometimes longer) for eyebrows to grow back to a full, natural look, as long as the follicles are still healthy.