Fab Detergent
Which by the way like many other vintage brands began as a soap powder by Colgate came in those famous blue boxes.
Lemon *Freshened* Borax
Lemon *Freshened* Borax with Brighteners
Lemon Scented with Fabric Softener
Finally of course there were the "One Shot" jobs you all are discussing.
Sometime in the 1980's (or was it the late 1970's?) there was a craze for detergents with fabric softeners added. IIRC it started with a fabric softener called "Rain Barrel" one could add to the wash cycle along with detergent thus saving Madame from having to "bother with the rinse". From there the next logical extension was to combine the two products thus saving Milady money on her household budget.
Sadly for the makers of these products the surfactants/chemicals required for good laundry cleaning and softening aren't best used in the same cycle. Consumer Reports IIRC always rated these "combination" detergents rather low, and soon most if not all left store shelves.
For those outside of the USA that cannot understand why there was even the bother remember a majority of washing machines at that time were top loaders not all of which had rinse aid dispensers. This meant Madame had to *catch* the rinse cycle to add fabric softener. Since many American homes had laundry rooms down in cellars, basements of other parts of the house if one was say upstairs or even on the second floor it was easy to miss hearing when the rinse started.
All this was soon to become moot as dryer fabric softener sheets (Cling Free followed soon by Bounce) hit the market. Also Downy came out with it's *ball* a type of fabric softener dispenser that was filled with product and bunged into the wash. In theory the thing was to open during the first spin and or rinse and save one from having to rush and catch that cycle.