I never normally use it, i have eco balls, but the grey was getting me down! I thought if I washed the whites in non- bio, and then a second time with no powder, any residue would be washed out.... oh no how wrong i was! she came up in red welts all over her body except her face... think it's optical brighteners... any body got any ideas of powder that doesn't have O.B.s? or experience of this kind of reaction?