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RO The swelling appears on the forehead and around the eyes rather than on the scalp, which is what surprises most patients. Fluid used during surgery, together with the inflammatory response to thousands of small wounds, collects in loose tissue and travels downward with gravity. The scalp itself is tightly bound and holds very little; the forehead and eyelids are not, so that is where it settles.
| Stage | What happens |
|---|---|
| Day 1–2 | Little or nothing visible; fluid is still in the scalp |
| Day 2–3 | Peak. Forehead and periorbital tissues are at their most swollen |
| Day 5–7 | Resolves spontaneously, without treatment |
These figures come from the published review of follicular unit excision complications (Romera de Blas et al., Frontiers in Medicine, 2026).
It does not threaten the grafts. Swelling sits in the tissue planes below and in front of the transplanted area; it is uncomfortable and it looks alarming, but it is not a sign that anything has gone wrong and it does not affect what grows.
What is not ordinary swelling: puffiness that is clearly one-sided, that begins or worsens after the first week, or that comes with fever, spreading redness or increasing pain. That pattern points away from fluid and toward infection, and it is worth a same-day message rather than a wait.
Related terms
For how to sleep, position the head and manage the first days, see the hair transplant aftercare guide. For redness that outlasts the swelling, see redness after a hair transplant.
