Can I wear a helmet after 3 weeks after a hair transplant?

Wearing a helmet 3 weeks after surgery should be no problem but always check with your doctor.  Your doctor knows the specifics of your surgery and can give you a better answer.  It's always a good idea to keep your doctor in the loop.

Hi Oceanprakash,You should wait at least 1 month before wearing an helmet to don't damage the grafts. 

Yes, you can resume all normal activity and product after two weeks. The only exception to this is hair color in which we recommend waiting 6 weeks.

Wearing a helmet should be fine but check with your surgeon for specific advice.  If you had FUT ( strip procedure) your surgeon may advise caution with anything rubbing on the scar. In general, the first 10-14 days post op are the most critical as these are the times of most intensive healing. 

Grafts are usually well healed two weeks after hair transplant. At this time, normal activity may generally be resumed but check with your surgeon for specific concerns.