My math is bad, so when you say 1:1, that means, for example, 1g to 1g...right?I make a 2 lb of oils size batch that yields 3 L (roughly) of diluted soap. I add enough water to make that a gallon. I then dilute that 1:1 to go into the foamer. That seems to be the perfect dilution to prevent soap boogers on my foamers.
And yes, making my own liquid soap saved the skin on my hands.