Essential ingredient for the traditional manufacture of solid soap by cold saponification. It reacts with oils to create a natural, gentle and effective soap. Handle with care, as this is a powerful product for controlled professional or domestic use.
Precautions for use :
• Do not inhale fumes when mixing soda-water.
• Keep out of reach of children.
• Avoid contact with skin or eyes. In the event of contact, rinse with plenty of clean water and seek medical advice if necessary.
• Store caustic soda in an airtight container away from moisture.
Making your own soap (cold saponification)
Caustic soda (sodium hydroxide) is a key ingredient in artisan soap making. It reacts with oils to create solid soap. Safe handling required.
CAUTION : Dangerous product, handle with care
Instructions :
Equipment preparation :
• Wear gloves, goggles and an apron.
• Work in a well-ventilated area.
• Prepare your oils and fats at room temperature, and a scale to weigh the soda and water accurately.
Mixing the soda and water :
• In a heat-resistant container (stainless steel or glass), slowly pour the soda into the water while stirring. A chemical reaction will release heat. Allow the mixture to cool to around 40-50°C.
Warning : Always add caustic soda to water, never the other way round to avoid dangerous splashes.
Mixing with oils :
• Heat the oils or fats to the same temperature as the soda solution (40-50°C).
• When both are at the same temperature, pour the soda solution into the oils while mixing.
• Use an immersion blender to achieve the trace, slight thickening of the soap paste.
Moulding :
• Pour the mixture into silicone moulds or other suitable materials.
• Cover the moulds and leave to rest for 24 to 48 hours.
Curing :
• Unmould your soaps, then leave to dry (cure) for 4 to 6 weeks to complete the saponification process and harden the soaps.
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