alchemist
Forum Replies Created
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I guess you’d need to show that they were more effective than the placebo.
Most of the data I’ve seen seems to indicate that they’re no better at reducing bacteria than products without (esp with respect to triclosan), that’s even before you start looking at whether they have any clinical benefit. Sure you can kill 99.9% of bacteria, but what’s the point if that 99.9% of bacteria is generally harmless.
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Here’s one on ethanol
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The test for sulfate is a Pharmacopoeial limit requirement, pretty sure anyone will leave it off the C of A if you ask nicely.
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Looks like Journal of Investigative Dermatology, April 2008, pages 15–19, should be Journal of Investigative Dermatology Symposium Proceedings (2008) 13, 15–19;
The problem with the internet is there is a lot of quoting of references, but no one ever reads them any more. -
Last time I checked sucrose [aka (2R,3R,4S,5S,6R)-2-[(2S,3S,4S,5R)-3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol] was a chemical.
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If anybody does, it sounds like a excuse to rebrand a normal food product and increase the margin
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I’ve yet to discover where people are getting this “natural” zinc oxide from.
If you’re making a zinc cream (a product that remains white or coloured when applied - essentially like paint) you may get away with it. If you’re making a product that appears relatively transparent when applied then dispersion (and the stability of the dispersion over time) will be critical. In the lab you’d use a Silverson or similar homogeniser - It takes a lot of energy to get it dispersed, and a little bit of magic to make it stay dispersed. -
Harrison Labs Been a few years since I’ve used them.
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I’ve used ChemWatch in the past http://www.chemwatch.net/ or http://www.chemwatchna.com/ for North America, quick turn around. Can provide SDS in multiple formats.
A company I deal with out of the US appear to be using these guys, http://www.msdsauthoring.com/ but I’ve no idea what they are like. -
Historically done on animals (usually rabbit ears) now mostly done on humans or not done and the claim justified on formula composition.
There’s an description of the test method hereSaponifying oils would make them into soap, and often more comedogenic.