Using Sodium Lactate in Hot Process Soap
คำถาม
When making Hot Process (HP) soap, I used liquid Sodium Lactate (ordered from myskinrecipes) by deducting its amount from the water used to dissolve the lye.
I used a ratio of 1 part Sodium Lactate to 100 parts oil in the formula (some sources use 1 tsp per 1 pound of oil, which is similar).
For example, if using 100g of oil, I would use 1g of Sodium Lactate.
I deduct this 1g from the water used to dissolve the lye to avoid excess water.
I add it after the water and lye solution has cooled down; it should not be added when hot, as it would increase the temperature further.
My concern is: if I mix in too much, the soap becomes hard and brittle easily. What is the recommended usage and method?
คำตอบ
Using Sodium Lactate in Hot Process Soap
Based on the discussion, for making hot process oil soap (สบู่ก้อนน้ำมัน Hot process) and aiming to make it harder and dissolve slower, the liquid form of Sodium Lactate is recommended.
- Recommended Usage: Approximately 2-3% of the total formula weight.
- Function: Helps to increase the hardness of the soap bar and makes it dissolve more slowly.
- How to Add: It is suggested to add the liquid Sodium Lactate to the lye solution after it has cooled down. Remember to deduct the weight of the Sodium Lactate from the total amount of water used to dissolve the lye.
- Caution: Using too high a percentage can result in a soap bar that is too hard and may become brittle.
The relevant product discussed is Sodium Lactate (Product ID 145).
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