Yes Britt, I agree! I find that fact very difficult to comprehend, as apart from looking dreadful I would feel most uncomfortable if I did not wash my hair at least once every three DAYS. However, according to Brigitte Hamann, the hair washing was a very elaborate procedure and involved bottles of cognac, numerous raw eggs etc etc, and perhaps these ingredients somehow maintained the hair in a clean, pleasant and non-greasy state for a longer period of time??? ODD!!