Whatever recipe you like, bump the sodium lactate to 3% and it will be quite hard. If you hot process the soap you'll have pretty a stout bar by morning.
Since the bars will be hard as f*** , a silicone mold will help as will some mold release (mineral oil).
As for being "natural' sodium lactate is just the sodium salt of lactic acid, the stuff we eat in yogurt and sourdough all the time.
Since the bars will be hard as f*** , a silicone mold will help as will some mold release (mineral oil).
As for being "natural' sodium lactate is just the sodium salt of lactic acid, the stuff we eat in yogurt and sourdough all the time.
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