Preservatives

Member exclusive Q&A: Should we preserve unpreserved ingredients? How do we know if they are unpreserved?

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In the January Q&A, Sima asked: Hi Susan, just wanted to know do you purchase products from your supplier that are not preserved? What amount of Liquid Germall Plus do you then preserve the product with? I am just a Newbie and when reading the ingredients list from the suppliers in Australia some of the products...

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Weekday Wonderings: Liquid Germall Plus, and a thought about contamination

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In this post, Preservatives: Phenoxyethanol, Paola asked: Quick question Re: Liquid Germal Plus… It’s my favourite preservative to use…however, I’m a little worried about using it because there are articles out there saying it’s not the healthiest preservative out there…BUT it preserves my products like no other. Are there any skin care brands who use LGP...

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Question from Patreon: Does polyquaternium 10 have a shelf life? Is acetic acid or aspen bark extract a good preservative?

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In the July Q&A on Patreon, Belinda asked: I have two questions…1) do you know if polyquaternium 10 has an expiration date? I’ve checked the website I bought it from (Personal Formulator) plus a couple more that sell it, and I’ve not seen anywhere if it does, indeed, expire. The reason I ask is because...

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Weekday Wonderings: Substitutes for parabens in an emulsified scrub?

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In this post, One ingredient, ten products: Incroquat BTMS-50 in an emulsified scrub, Febe asks: Love the recipe. I am concerned about Phenonip and the parabens. As I see the INCI Phenonip is Phenoxyethanol (and) Methylparaben (and) Ethylparaben (and) Butylparaben (and) Propylparaben. It has parabens and I am trying to stay away from them. I see...

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Weekday Wonderings: Is anyone using Spectrastat G2?

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In this post, A bunch of comments I missed in March, Kathrine asks: I was curious if you had any insight on the efficacy of using Caprylhydroxamic Acid (and) Glyceryl Caprylate (and) Glycerin as a preservative. I haven’t been able to find a lot of information on it, other than the suppliers who swear by...

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