Just spent a few moments over on the Henkel.de/Persil website, and the product is much as one expected.
Promoted for use when persons are doing laundry in warm or cold water, where even if used oxygen bleach would not have the disenfection results desired. Also for use when laundering colours, man-made fibers and other items which must be laundered in cold or perhaps warm water.
Germans have long had access to a product called Sagrotan which is also a disenfectant added to wash or rinse cycles, and is marketed mainly to women. Why? Well to control bacteria, and fungi that may be on female intimate apparel and workout gear.
Unlike old days, much in the way of knickers, drawers,tights,leotards,girdles, etc, (to put it bluntly), are not pure cotton or linen, but all or partially man made fibers such as nylon,latex, polyester, and so forth. These materials cannot or should not be laundered in hot water, much less boil washed. Even routine use of oxygen bleaches and cause them to degrade. Given that females have far more "problems" with yeast and infections, what is a proper German woman to do?
Well one simply adds Sagrotan or now the Persil Hygienespuler to the rinse and be done with it.