Net mythbuster

This website reminds me of the mythbusters --> http://www.cockeyed.com/inside/howmuchinside.html

Seeing and measuring how much 'ingredients' are in items, is it the same as the label? less? or more? Some interesting facts being found out... like how many applications of lipstick a MAC liptick contains... hehehe... my gf would probably be interested ^.^