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Is filter sterilization common practice in cosmetics manufacturing?
Is it a common practice to have filter sterilization of solutions (whether stock solutions of ingredients or finished product formulation in liquid form) to get rid of any possible debris, impurities, or contaminants?
For ex, using 0.2um filter paper with vacuum.
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3 Replies
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No.
From the micro side, the necessity of removing bugs indicates a contaminated/adulterated raw material that would establish your finished product as adulterated. Cosmetic manufacturing is nonsterile and it’s hard to imagine how this could even be accomplished without immediate recontamination.
From the particulate side, the adulteration is also in question and such filtration is very inefficient and it’s unwise to become your own raw material reconditioner. Pay the supplier to deliver the material you need to make product. You’re in the cosmetic not raw material business.
For susceptible stuff you might make in house such as a proprietary ferment, preserve it. whether filtered or not.
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No. Cosmetics don’t require sterilization in manufacturing. Having said that, ingredients are tested to ensure they have low/no microbe counts & you shouldn’t use ingredients with obvious debris floating in it.
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as Perry said
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