Couldn't get through the whole commercial but I imagine it contains Minoxidil the only thing approved to regrow hair. I always wondered why Howard never just thought to use this to get his locks back. But then again he's anti- anything that may really help him medically.
While I don't think she can grow her hair (it seems like she has some form of alopecia (she had mentioned before that she really has little to no hair on her body. But maybe if they come out with a regrow your stomach and intestines version that may be an option.