what does hair have to do with it?

When I was out shopping the other day, I found that there was a good 6-8 girls listening intently to a salesgirls spiel on how to how to prevent hair loss and so forth. She was with one of the shampoo companies who are now being as pushy as the oil companies were a while ago about treating hair fall in young women. Considering how young she was, I was impressed that she knew so much technical stuff about hair follicles and so on and in the end she managed to persuade all the girls listening to her to purchase the company's new product.