I’m just about to tell someone that soap suds are detrimental to good wash results and only added for the benefit of customers who don’t believe a detergent can wash properly if they can’t see any. Am I right or am I getting mixed up with cold water detergents?
They’re no detrimental to my knowledge but, IIRC, there are foaming agents in there to produce the foam. I was told that this was so as to allow people to believe that there was washing action going on as, without the foam, they didn’t believe that it was washing.
I understood that the suds can reduce the effect of the laundry rubbing against each other by creating a soft film of foam and a cushioning effect. I believe this is only the case when oversudsing occurs but the principle is that they don’t aid cleaning and can hinder it.