I have a friend who has a nasty habit of scratching her scalp with her french manicured nails and when the nail comes out of her hair, it has dandruff or whatever dead cells there are. Then she would use another nail to flip out whatever its in side her nail and some funny things would fly all around the place. she does not do this discreetly .She could be talking to you and doing it ! I havent known this person for a long time but this habit pisses me off and its so gross it makes me want to puke. She does that about 5 times an hour if she's not doing anything with her hands. Its completely revolting , unhygienic and unlady like. I've spoken to her ( 3 times) and she says , she is not even aware that she does that. Another friend of hers said she gave up on her because she tells her while on action, that she's doing it , again, she stops and then 5 minutes later, she does it again. She had a few blows in her life, from losing parents, to being divorced ,to losing her only child. Could this have anything to do with this nasty habit . Other than that she is a well groomed lady, who takes care of herself and follow basic hygene rules except when it comes to her HEAD . How do we help her stop this ?Its really embarassing especially when you go out and eat out - we completely lose our appetite and we're thinking of ditching her as a friend .