In message , "Dave Plowman (News)"
writes
In article ,
polygonum wrote:

Early detergents (teepol anyone?) were very thin liquids.

Why would you want to thicken it if doing so serves no purpose?

I suspect that years of marketing have convinced the public that thicker
is better. Domestos used to be advertised as thick, so perhaps shoppers
think that washing up liquid etc. should also be thick.

--
Graeme