Does smoking affect hair transplant graft survival?
Yes — here is the clinical evidence
Nicotine causes vasoconstriction — narrowing of blood vessels, reducing peripheral blood flow including to the scalp. During the revascularisation window (Days 1–14), when transplanted follicles depend on new capillary ingrowth for survival, reduced blood flow measurably impairs this process. Clinical studies comparing smoker vs non-smoker outcomes have documented 20–30% reductions in viable graft count at 12 months in heavy smokers.
When to stop — the clinical recommendation
| Period | Recommendation |
|---|---|
| 2 weeks before surgery | Stop smoking completely |
| Days 0–10 (most critical) | No smoking — grafts establishing blood supply |
| Days 10–30 | Strongly advised no smoking |
| Month 2+ | Smoking risk significantly reduced — follicles fully vascularised |
Nicotine patches and vaping — are they safer?
Both deliver nicotine and both cause vasoconstriction. They are not safe alternatives during the recovery window — they produce the same vascular effect as cigarettes. Nicotine-free products are less harmful but still may affect systemic circulation. The recommendation is nicotine-free for the full critical recovery period.
