For example, Robert Tisserand’sEssential Oil Safetystates that a maximum safe level oftea tree oil (Amazon)for skin use is 15%. Pretty high. On the other hand, there are more irritating essential oils, such asoregano (maximum dermal use 1.1%). And then there are highly irritating essentia...
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Fluids The continuous and dispersed phase fluids were the olive oil and the aqueous solution of PEO (Sigma-Aldrich, Shanghai, China), respectively. The molecular weight of PEO was Mw = 2 M·Da. PEO solutions were prepared by adding PEO powders in deionized water (Milli-Q, 18 MΩ·cm)...
Among these compounds, levulinic acid (LA) is a short-chain fatty acid with a ketone carbonyl and an acidic carboxyl group, which has wide applications in industry and agriculture to produce a variety of products such as plasticizer, oil additives and fragrances [6–9]. Up to now, the ...