I have been wanting to try making my own powdered laundry detergent ever since I saw the recipe on one of my favorite blogs, http://moneysavingmom.com/ . After reading through lots of comments and suggestions I felt ready to try it for myself.
1 bar of soap (Ivory, ZOTE & Fels-Naptha)
1 cup of borax
1 cup of baking soda or washing soda
For my personal laundry powder I am using Ivory soap and baking soda. I may change it if I find that I am not getting the desired cleanliness for my clothes. I chose baking soda because its less caustic and acidic. My daughter Katherine has very sensitive skin and I have to be careful with products that will be on her skin. I am also going to add white vinegar to my wash/rinse cycle to help with brightening and odors.
I put my bar of soap in the freezer for about an hour so that it would be easier to grind in my food processor.
I chopped and ground it up for about 1 minute
I have washed 5 loads of laundry since making it Saturday, the water does not suds up but the detergent is completely dissolving, which is good. I am putting the white distilled vinegar into my downy ball and that has been working just fine with no vinegar smell at all. I just recently ordered some all natural/biodegradable liquid brightener to use so once I get it I'll be using that instead of the vinegar.
Give it a try, its worth that at least :)