Super white wash
For white washing, I only add half of the powder and then a pea-sized dollop of soft soap.
The result: bright white linen without stains! :)
xldeluxe: I had decades ago "solid" soft soap, now I know her only liquid ....Since you (@Much) speaks of pea-sized, I go out of thick soap. Where else are they?
And that's really enough, so that everything shines?
I only wash white with white and see my "towel closet" that not everything really snow-white (as I want to have it) is ...... but not gray but just not bright white as new. I always use colored towels, but I would like to have some white towels ... so to speak: A whiter shade of pale (for the oldies among us)
Not to be confused with: Shades of Gray (for the younger and the young at heart ;-))))