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Physician Answered Q & As

Does Cold Weather Have Any Negative Effects on Hair Transplant Grafts?

I work as a police officer in New Jersey and at times need to be outside for my job. If I were to have a major transplant procedure (5-6,000 grafts) during the winter months (such as December), how long after the last day of the procedure will it again be OK to be outside for an extended period of time (as long as 1 hour)? What I mean is, will the cold weather of December here in New Jersey have a negative effect on the newly transplanted grafts if I am outside for too long? Can I simply wear a wool head cap (after a week or two of recovery time from the procedure) to keep my head protected from the cold weather and related elements? Thanks, Jay

I am not aware of any adverse effects of the cold air on the survival of grafts planted. They are nested well down into the warmth of your scalps warm blood supply and tissues. Just because no one knows the answer for sure and to have a little “cushion” of time, I would recommend waiting 2-3 days maybe until being outside below freezing without a hat on. With the hat, I’m sure everything is fine a half hour after you’re done. The larger threats to the grafts would be any “shuffling” effect that may occur on the grafts surface those first 5-6 days when wearing a helmet, a hairpiece, or something else that is tight against the scalp and is moving from side to side. The other minor threat to the grafts is direct blunt trauma, where you are engaged in an activity in which you are likely to hit your head (playing hockey, for example).


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