Silky Serum Base Plus: Emulsion Type and Stabilizer Usage (NaCl, Magnesium Sulfate)
คำถาม
Based on the product description for Silky Serum Base Plus:
"Silky Serum Base Plus can support up to 30% oil and silicone in the formula (including the proportion of Silky Serum Base Plus). The formula should contain at least 60% water (70% recommended for formula stability).
Adding 1% NaCl (pure salt) to the formula will help improve formula stability, especially if separation occurs after standing. It is recommended to use 1% in all formulas using Silky Serum Base Plus as the base, mixing until dissolved in the final step.
- It is recommended to add 1% Magnesium Sulfate to help improve formula stability. Add to the formula in the final step and mix until dissolved. This helps prevent separation well."
I have the following questions:
- Based on the description stating that Silky Serum Base Plus contains more water than oil and silicone, does this mean it is an Oil in Water emulsion?
- The product page recommends adding both NaCl and Magnesium Sulfate for formula stability. Should I add both ingredients to the formula to enhance stability?
- Regarding question 1, the information page for Magnesium Sulfate states:
"Magnesium Sulfate is commonly used in Water-in-Oil formulas as an emulsion stabilizer (not suitable/should not be used in oil-in-water formulas)."
Given that the information states it is not suitable for oil-in-water formulas, why is it recommended for use in formulas using Silky Serum Base Plus, which appears to be an oil-in-water base?
Please explain and answer these questions. I may not fully understand, and I'm not sure.
คำตอบ
Regarding Silky Serum Base Plus (Face/Eye, Oil)
Thank you for your detailed questions regarding Silky Serum Base Plus. I understand your points and will clarify them based on the information provided:
Is Silky Serum Base Plus an Oil-in-Water (O/W) emulsion base?
- Yes, based on the product description stating that the formula should contain at least 60% water (recommended 70%) and can support up to 30% oil and silicone (total, including the base), Silky Serum Base Plus is designed to create an Oil-in-Water (O/W) emulsion. In this type of emulsion, water is the continuous phase, and oil/silicone droplets are dispersed within it. Your understanding is correct.
Should both NaCl and Magnesium Sulfate be added for stability?
- The product description mentions both adding 1% NaCl and adding 1% Magnesium Sulfate as methods to improve the stability of formulas made with Silky Serum Base Plus. It recommends adding 1% NaCl in every formula using this base and also states that adding 1% Magnesium Sulfate helps improve stability and prevent separation. You can choose to add either or both, following the recommended dosage of 1% for each, to enhance formula stability.
Why is Magnesium Sulfate recommended for this base (O/W) when its general description says it's for W/O?
- You've observed a valid point and an apparent contradiction between the general description of Magnesium Sulfate and the specific recommendation for Silky Serum Base Plus. While the general information for Magnesium Sulfate states it is typically used as a stabilizer in Water-in-Oil (W/O) emulsions and is not suitable for Oil-in-Water (O/W), the specific product description for Silky Serum Base Plus explicitly recommends adding Magnesium Sulfate to improve the stability of formulas made with this particular base. This indicates that despite the general rule, Magnesium Sulfate does have a beneficial stabilizing effect within the specific emulsifier system used in Silky Serum Base Plus, which is designed for O/W formulations. Therefore, you should follow the specific recommendation given for Silky Serum Base Plus regarding the use of Magnesium Sulfate for stability with this base.
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Silky Serum Base Plus (Face/Eye, Oil)
