**I am not a scientist**
Nor have I ever taken a chemistry class. My final product is a powder detergent from other recipes I have slightly modified due to internet research I have done.
Bar Soap: Bar soaps are made with oil and lye, both can attach to your cloth diaper and over time cause buildup that reduces the absorbency of your diaper. Also buildup can cause skin irritation on your babies sensitive bottom.
Borax: Great cleaning strength, breaks down well, not a great water softener. Breaks down into Hydrogen Peroxide which is a great cleaner.
Washing Soda: Very caustic, you should totally use gloves. Needs to be rinsed well, failure to do so can cause skin irritation of baby. But it is a great degreaser and great at softening hard water.
Baking Soda: Not as alkaline as washing soda, so no gloves needed. Not as strong as washing soda, but easily dissolves in water and washes clean. From my understanding it's sort of like washing soda but half the strength.
Oxy: Breaks down into Sodium Carbonate + Hydrogen Peroxide. The breakdown in water brightens and removes stains. Similar to washing soda and borax.
However through my research I learned that Borax and Washing soda can both breakdown PUL and prematurely age elastic (both found in covers). Which would really make any home made detergent bad. But I found that store brand cloth diaper detergent like Rockin Green contains Sodium Carbonate (washing soda) so I don't think it can be that bad, Sodium Percarbonate which is like sodium carbonate (washing soda) and Hydrogen peroxide so Oxy, which is very similar to washing soda and borax. I know the chemical composition of the ingredients is different between mine and store bought, but they do all act in similar ways.
One thing to be aware of when using store bought detergents, they are not all equal, you should be careful when using the same detergent as you do on your clothing, on your diapers.
Things to avoid:
Optical Brighteners, Fragrances and Dyes, Fabric Softeners These can also deposit residue on your diapers that can irritate skin and reduce absorbency.
If you are a military, a military wife or a hunter you likely already avoid Optical brighteners and fragrances for your, and/or your husbands camo.
1/2c Washing Soda
1/2c Baking soda
Sift all ingredients into a bowl and mix well.
Sifting ingredients created a bunch of dust and required me to not only clean all my counters again, but wash myself because I was covered in dust, mostly I think from baking soda, because it was the finest of the powders.
I then sifted again into another container.
Poured into sealable container.
**HE Front Loader (although I don't know a top loader would be much different)**
I set my washer up on a Heavy Duty wash (HOT)
Set it for pre-soak (which is cold)
Deep clean (hot)
with extra rinse
I hang dry or tumble in the dryer if I need a diaper ASAP, my covers don't go in the dryer.
It should be mentioned that I use prefolds and a few bum genius AIO's and I have Bummies and Thirsties covers.
My Recipe for Laundry Detergent: First Try and Redux
Both (cloth diaper and laundry) detergents are safe on your clothing, but the Laundry Detergent has bar soap (fels-naptha) in it, so it is not suggested for your diapers. The Fels-Naptha makes a great cleaning soap though, great on dirt and stains of all shapes and sizes.
I don't think my detergent is better than a store bought (well maybe a little). But it saves me money and it gets the diapers/clothes clean.