Instrument for detecting alcohol content in cosmetics
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Generally, cosmetics are required to be free of alcohols, or to have an alcohol content below a specified level. Many plant-based cosmetics use ethanol in the extraction of active ingredients. So, after the ethanol removal process, what methods are used to determine the alcohol content? Are there any online instruments available for this purpose, such as chromatographic analysis or other methods?
This post was last edited by qugd on 2016-12-28 21:39. What makes you say that \"alcohols are generally not allowed in cosmetics\"? Let me tell you, the vast majority of cosmetics, especially high-end ones, must contain certain alcohols; don’t speak nonsense if you don’t know anything about this. Some alcohols in cosmetics help to keep them moist, enhance their penetration into the skin, and also serve as components that prevent the cosmetics from deteriorating. These alcohols include: glycerol, propylene glycol, inositol, sterols, lanosterol, branched fatty alcohols with 12 to 24 carbon atoms, sorbitol, and others. Cetyl alcohol, also known as cetostearyl alcohol, is specifically used to enhance the water absorption of the skin. Some toners and makeup removers contain a certain proportion of ethanol. Don’t you know the concepts of polyols and higher alcohols?
Wow~ You really understand well. I’m a beginner; please forgive my foolish remarks. I don’t know anything about higher alcohols and polyols. Let’s get back to the main topic. May I ask the expert how to measure the ethanol content in cosmetics? It’s not necessary to measure higher alcohols, polyols, glycerin, propylene glycol, inositol, sterols, lanosterol, fatty alcohols with carbon atoms from 12 to 24, sorbitol… Just ethanol is enough