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coffee soap. ideal for cooks, gardeners, mechanics
This is a hard soap with good exfoliating properties.
52g Sodium Hydroxide crystals (sold as drain cleaner at bunnings)
400g Rice bran oil.
Used coffee grounds (siphon ground best, espresso OK, but a bit fine).
The proportion of oil and sodium hydroxide is important. If you use less NaOH, soap will be softer and a bit oily. More and it will likely burn the skin.
Coffee grounds can vary. I used what started is as 14g dry.
Basic Soapmaking Instructions
While wearing safety goggles and rubber gloves, combine solid lye and liquid, stir well. Set aside and allow to cool (100