Great news, we sell both sodium and potassium hydroxide. Here's a link to them:
Sodium Hydroxide (for bar soap): http://www.brambleberry.com/Sodium-Hydroxide-Lye-P3037.aspx
Potassium Hydroxide (for liquid soap): http://www.brambleberry.com/Potassium-Hydroxide-2-pounds-P4730.aspx
Please know, there is a 5 unit limit.
Due to safety regulations involved with shipping lye we are only able to ship lye (both sodium hydroxide and potassium hydroxide) via Ground Shipping, regardless of the shipping method you choose at checkout. Lye cannot be shipped to Alaska, Hawaii or Internationally.