I have no clue how to figure the percents... but basically my recipe calls for 9.570oz of water and 4.054oz lye, and I only use 8 oz of water. Takes forever to cool but I generally work with higher temps (108-116)
I use equal parts lye/liquid which - depending on the calculator - is a 48%-50% lye solution.
This method is a bit tricky at times - but speeds up cure time as far as the liquids evaporating from the soap. HOWEVER - I am still of the belief that the longer a soap cures the MILDER they become and that longer cure times effect the lathering properties as well.
I can use a soap at the two week mark with good results. I am comfortable using it and comfortable with others using it. But at four weeks the results are much better as they are even less drying and have a thicker, richer lather. and they last longer too depending on the recipe.
Birdie, I do a 33% at least discount, but I call it lye solution percentage more often like Smelli does. I do WD RTCP using GM! I'll decipher the acronyms later if need be to newer ones, just quickly wanted to chime in!