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Teach Soap • View topic - IFRA usage rate

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 Post subject: IFRA usage rate
PostPosted: Mon Feb 03, 2014 2:29 pm 
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Joined: Fri Oct 11, 2013 5:34 am
Posts: 138
Location: Greater St. Louis Metro Area
I bought Madagascar black pepper from WSP, the IFRA sheet says 31.7% for soap, can I actually use it at that rate? (I'm sure I wouldn't want to regardless because I don't like strong scents) WSP says something about the maximum percent the base will accept, but I have no idea if the percent given (6% for CP) is factual or just an example.

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 Post subject: Re: IFRA usage rate
PostPosted: Mon Feb 03, 2014 2:46 pm 
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Joined: Mon Jan 30, 2012 7:42 am
Posts: 1621
Location: Western WI
The IFRA usage is what percentage of an FO is skin safe in the given product. So with Madagascar Black Pepper, they're just saying that going above 31.7% would not be skin safe.

The 6% is most likely just an example of what they've found a good usage rate for it.

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 Post subject: Re: IFRA usage rate
PostPosted: Mon Feb 03, 2014 3:04 pm 
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Joined: Mon Jan 14, 2008 11:14 pm
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Location: Mistress Of Lather
I wonder if that's a mistake. 31.7% in soap would, to me, be irritating. I wonder if that's suppose to be 3.17%.

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 Post subject: Re: IFRA usage rate
PostPosted: Mon Feb 03, 2014 4:13 pm 
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Location: Greater St. Louis Metro Area
Here's a link to the sheet http://www.crafters-choice.com/PDFs/Pro ... nceOil.pdf

They're all really high, it's all 31.7 or 12.6, I haven't looked a lot of IFRA sheets but I feel like I usually saw more variance too.

I wonder if it's perhaps diluted for whatever reason.

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 Post subject: Re: IFRA usage rate
PostPosted: Mon Feb 03, 2014 4:21 pm 
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Location: Mistress Of Lather
I would take that PDF with a grain of salt. I know that the actual IFRA site is hard to navigate, but from what I have seen there, their usage is much lower for soap.

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