Pure sodium hydroxide (caustic soda), the essential alkali for cold process and hot process soap making. Sold in a 1kg pack.
Also known as: caustic soda, NaOH
Use for: cold process soap, hot process soap, liquid soap (as part of a dual-lye blend)
Safety: lye is corrosive. Always wear gloves and eye protection, add lye to water (never water to lye), and work in a well-ventilated area. Keep away from children and pets.
