How much lye is required to make a batch of soap and what is the average price of lye?
Lye can be purchased through an online supplier at about $6 for two pounds, enough to craft approximately 70-80 bars of soap. We make soap in 20-bar batches, which requires approximately 9-10 ounces of lye per batch. Red Devil brand lye was available at your local grocery store in 12 and 18 oz cans (in some areas), but it is now difficult to find. Some soapmaking supply companies sell lye online. Conduct a google search to find your best option. Check the label to ensure that you are purchasing 100% sodium hydroxide (no additives). If you purchase lye from any source other than a soapmaking supplier, read the label to make sure you are using lye that does not contain other additives that might adversely affect your soap.