Ectoin Concentration: Research (0.1mM) vs. Cosmetic Usage (%)
Question
Could you please clarify the usage of Ectoin in research topic #12, specifically the Single Cell Gel Electrophoresis assay used to measure damage after exposure to UVA Visible and UVA Invisible light? The research study used Ectoin at a concentration of 0.1mM. What percentage does this equate to in terms of practical usage in cosmetic formulations?
Answer
Ectoin Concentration in Research vs. Cosmetic Use
The research study (topic #12) using 0.1mM Ectoin for the Single Cell Gel Electrophoresis assay is using a concentration equivalent to approximately 0.0014% (weight/weight).
This is calculated based on the molecular weight of Ectoin (approx. 142.16 g/mol). 0.1 mM equals 0.1 millimoles per liter. Converting millimoles to grams (0.1 mmol * 0.14216 g/mmol = 0.014216 g) and assuming the density of the solution is close to water (1 L ≈ 1000 g), the percentage is (0.014216 g / 1000 g) * 100 = 0.0014216%.
In cosmetic formulations, the typical recommended usage rate for Ectoine (Ectoin, from Bio-fermentation) is 0.5% to 2.0%, with 2.0% being the recommended concentration for optimal performance. Therefore, the 0.1mM concentration used in the in vitro research study is significantly lower than the concentration typically used in finished cosmetic products.
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