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Good Old Fashioned Hard White Soap
Just Like Granny Used to Make

By David Fisher, About.com

A recent student in a soap making class I taught for Taylored Concepts wrote and asked me how to make her soap whiter. I had given the students a basic recipe like my Grocery Store Soap Recipe with an equal ratio of Olive, Palm and Coconut oil, and a little Castor thrown in for extra lather. The recipe was:
  • 35% Olive Oil
  • 30% Palm Oil
  • 30% Coconut Oil
  • 5% Castor Oil
It came out a nice light beige color. Not nearly as beige as with Goat's Milk Soap, but not as white as she wanted. I made sure that her fragrance oil wasn't the culprit. It wasn't. She was using a really nice, clear, lavender-based fragrance oil. So since that wasn't the culprit, I told her how to get her soap whiter.

There are two basic ways to make your soap whiter:

  1. Add some Titanium Dioxide (TD). If you're using Water-based Titanium Dioxide (Buy Direct), you add it to your lye-water mixture. If you're using Oil-based Titanium Dioxide (Buy Direct), then you can add it to your melted oils at any time up to trace. With either version of TD, I usually add about 1 tsp. per pound of oils. (ie. If your recipe has 32 oz. of oils in it, use 2 tsp. of TD). Once you get the feel for how TD works in your soap, you can use it to lighten the entire batch, or just part of a batch - incorporating it into swirls with other colors.

    OR, to get great hard white soap, you can also:

  2. Adjust your recipe with "whiter" oils
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