Q: How far into the scalp are the grafts placed and is the follicle far enough into the scalp that it will not be damaged? I have heard that the critical time to not touch your scalp is the first 2-3 weeks after the procedure. — M.G., Hillsborough, C.A.

A: The growth part of the follicle is 3-4mm into the scalp. Grafts can be dislodged the first 10 days, so you need to be careful not to scrub your scalp during this period. After that, the grafts are permanent. At 2-3 weeks they can’t be dislodged, even by vigorous scrubbing.