Dear samt1989, Thank you for submitting this question. During a hair transplant procedure the donor may be touched by the hat, but the grafts are typically above where the rim of a hat will sit. As such, I allow my patients to wear a hat beginning on the 2nd day after surgery, and I actually show them in person how to put the baseball cap on. It’s important to have a cap that will hold its shape. If you hold the brim of a baseball cap horizontally and it maintains its form, that’s the hat you want. If you have a golf hat or some other floppy hat, one that sags to the floor when you hold the brim in front of you horizontally, that one will sit on the grafts and so is less ideal. If it’s a hat that you wear, you’ll want to loosen it up a bit as your head will be a bit swollen. Wearing a hat obviously helps to cover up the grafts and the redness/scabbing and allows patients to re-enter society much more quickly than without the use of a hat. Scarves for women can also be used, but I typically advise patients wait at least 5 days before putting on a scarf. I hope this information is helpful to you. Kind Regards, Ken Anderson, MD, FISHRS