Concentration and Solubility of Centella Asiatica Extract (Madecassoside 7.7%)
คำถาม
I am using the current version of Centella Asiatica Extract (Madecassoside 7.7%, Product ID 294) in my formula. Older forum posts recommend using up to 5-10%, but the current product page recommends 1-2%. I have already added 5% to my formula.
- Will there be any negative effects besides being wasteful?
- Also, the product page states it dissolves in oil or Glycol, but older information suggested it was water-soluble. Is the current version (Madecassoside 7.7%) water-soluble?
- Is it necessary to use Glycol for dissolution, or can it be dissolved in oil?
- What happens if it's not dissolved properly in a water-based formula?
คำตอบ
Hello! I understand your confusion regarding the usage concentration of Centella Asiatica Extract (Madecassoside 7.7%) based on older forum posts versus the current product page, as well as your questions about solubility.
Based on the information you provided and the staff replies in the forum threads, here is the explanation:
Regarding using 5% instead of 1-2%:
- The staff clarified that there are different versions of Centella Asiatica Extract with varying concentrations. The older version could be used at higher concentrations, up to 5-10%.
- The current version (Madecassoside 7.7% - Product ID 294) is much more concentrated, and it is recommended to use only 1-2%.
- Using 5% of the current version (Madecassoside 7.7%), as confirmed by the staff in the forum reply, will not cause harm to your skin, but it is an unnecessarily high amount and is very wasteful.
Regarding solubility and not adding Glycol in the formula:
- The staff explicitly stated that the current version of Centella Asiatica Extract (Madecassoside 7.7%) must be dissolved directly in oil and cannot dissolve in water like the older version.
- Older forum recipes recommending 5% likely used the old water-soluble type of Centella Asiatica Extract.
- If you used the current version (Madecassoside 7.7%) in a formula that is primarily water-based without dissolving it properly in an oil phase or a suitable solvent first (like oil as the staff mentioned for Madecassoside 7.7%, or possibly Glycol as the product page might indicate), the extract might not have dissolved completely. This could potentially lead to separation, reduced skin penetration effectiveness, or poor dispersion within the cream.
In summary, the difference in information is due to different types of Centella Asiatica Extract products. The current version is more concentrated and dissolves in oil (or Glycol according to the website) but not water like the old version. Using 5% of the current version is not harmful but is wasteful, and for optimal effectiveness, it should be dissolved in a suitable solvent before incorporating it into your formula.
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