I live in New Zealand, where can I buy Potassium Hydroxide to make liquid soap?

Here is the answer to your next soap making question:

The following company specifically state that they supply potassium hydroxide in both liquid and solid form, their website link is below:

Aromatics & More

If you live a long way away from them, give them a call, I'm sure they would advise you if there are any suppliers closer to you.

More soon.