Only thing a detergent for "HE" machines must be is low sudsing/clean rinsing.
There are several detergents out there that meet this requirement, Fresh Start, FAB and Ajax seem to be highly rated for being low sudsing.
Many low sudsing degergents add some type of chemical (soap, silicone oil, fish oil, oil....) to help control suds. Have found adding a tiny amount of Fels soap powder helps control sudsing when using Cheer Free & Gentle powder, but still have watch dosage.
Tide HE which is supposed to be low sudsing, creates tons of froth if one is not very careful, as will Wisk HE and most of the other American "HE" detergents.
At the moment am using a detergent from Ecolab, which is really nothing more than STPP,surfactants,washing soda, and tiny amounts of other stuff. It is highly concentrated and when properly dosed makes little to no suds, rinses clean (by second rinse at that), and cleans VERY well. Ecolab promotes the detergent for linen laundries found in hotels, motels, sports clubs etc. Apparently it is designed to clean greasy/oily dirt very well, which it does. Have to watch the dosage as if one is too generous not only does rinsing become difficult, the scent will NOT rinse away.
It really is a shame the United States does not have the huge variety of "HE" detergents found across the pond. Persil is a good detergent (though not the holy grail some on THS would have one believe), but it cost so dear. Persil is "Tide" in Germany and costs no more than what we pay for that product here.
Have noticed all the new "All Small & Mighty" detergent bottles sport "HE Approved" on the label. One scent smells wonderful, IIRC it is the one in the white bottle. May have to sneak yet another detergent into my stash.
Launderess