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Saponification in the soap making process

Pesée de l'hydroxyde de sodium Verser l'hydroxyde de sodium dans le pyrex  Mélange des huiles et de l'eau/hydroxyde 

What is soap and saponification ?

Definition: Saponification is an exothermic (gives off heat) chemical reaction that occurs when fats or oils (fatty acids) come into contact with lye (a base.) Saponification literally means "turning into soap" from the root word, "sapo", which is Latin for soap. The by-products of the saponification reaction are glycerin and soap.

Oils + lye (dispersed into water) = soap + glycerin

Oils and fats each have what is called a “saponification value”, which is the amount of lye needed to completely neutralize them into soap with no lye left over. Each oil has a different value.

Taken from on Candle and Soapmaking

To learn about cold-process soap making, follow the links:


Coulée du savon dans les moules
 Coupe du savon à l'huile d'olive


Whether you prefer handmade or commercial soap, liquid or solil soap, it is really your choice! Remember: you have an impact on economy and environment if you choose products that are good for your health and your planet.