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Teach Soap • View topic - need math help!

Teach Soap

Soap Making Recipes, Tips and Tutorials
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 Post subject: need math help!
PostPosted: Fri Apr 19, 2013 6:50 pm 

Joined: Sun Mar 03, 2013 4:27 pm
Posts: 16
I'm pretty new to this so I'm trying to figure this out, please help? I'm trying to formulate my own recipe from a foundation recipe, and when it comes to figuring out how much EO to add, I think I'm coming up with the wrong answer, it seems like too much. The basic recipe is 2 oz. butter, 4 oz. oil, 2 oz. wax, which would equal 8 oz of product, right? Essential oils should be added 1% to 3% right? I'm still not sure how to figure that out on a calculator, so I typed in "2% of 8 oz" on google and I got 4.5 grams. Is 4.5 grams the amount of Essential oil to add? Isn't that a lot for 8 oz of product? Thank you so much in advance for any help!!


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 Post subject: Re: need math help!
PostPosted: Fri Apr 19, 2013 7:57 pm 

Joined: Sun Mar 03, 2013 4:27 pm
Posts: 16
Did a little more research and does 3 ml sound a little better? I don't have an eye dropper, so how do I know how many drops to use? I found a site that kinda tells you how many drops per ml for each eo http://www.anandaapothecary.com/measuri ... -oils.html does this sound right? That's a lot of drops!!


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 Post subject: Re: need math help!
PostPosted: Fri Apr 19, 2013 9:03 pm 
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Joined: Mon Jan 14, 2008 11:14 pm
Posts: 24336
Location: Mistress Of Lather
I get 0.08 oz. for 8 ozs. of product at 1%. I know that for 0.06 ozs. it's 1.8 ml. or about 40 drops.

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Irena
Closed minds are like faulty parachutes; they refuse to open.


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 Post subject: Re: need math help!
PostPosted: Fri Apr 19, 2013 10:06 pm 
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Joined: Fri Jan 21, 2011 4:03 pm
Posts: 1598
Location: Sum beach, somewhere
The amount of eo to add depends on the eo you are using and the type of product.You cannot assume that the proper amount is 1% or 3%. You need to check the IFRA amounts for each eo and the category (there are 10) that your product fits into to see the max amount that you can use.

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 Post subject: Re: need math help!
PostPosted: Fri Apr 19, 2013 10:26 pm 

Joined: Tue Jun 26, 2012 6:55 pm
Posts: 504
Location: Lakewood, WA
This is why I love the metric system - I always convert to metric or start there, and work strictly in percentages. Seriously, why do we keep this clumsy Imperial system around anyway? Can we put a stake in its heart already?


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 Post subject: Re: need math help!
PostPosted: Fri Apr 19, 2013 10:28 pm 

Joined: Tue Jun 26, 2012 6:55 pm
Posts: 504
Location: Lakewood, WA


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 Post subject: Re: need math help!
PostPosted: Sat Apr 20, 2013 6:09 am 

Joined: Sun Mar 03, 2013 4:27 pm
Posts: 16


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 Post subject: Re: need math help!
PostPosted: Sat Apr 20, 2013 6:12 am 

Joined: Sun Mar 03, 2013 4:27 pm
Posts: 16


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 Post subject: Re: need math help!
PostPosted: Sat Apr 20, 2013 11:52 am 

Joined: Tue Jun 26, 2012 6:55 pm
Posts: 504
Location: Lakewood, WA


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 Post subject: Re: need math help!
PostPosted: Sat Apr 20, 2013 1:04 pm 
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Joined: Fri Jan 21, 2011 4:03 pm
Posts: 1598
Location: Sum beach, somewhere
It does not have to be that hard. Just get a calculator and put in "8" X 1% the number that is then showing (without hitting the equal sign) is 0.08 and that is your answer. This is in ounces since your 8 is in ounces. If you want grams, convert the 8 ounces into grams, which is 226.8, and do the same. 226.8 x 1% you will get 2.27 (well actually you will see 2.268, I rounded).

Yes, you could do this all long hand and such, but there is no point when you have a calculator right there on your computer. Quick and easy, and no asking google or anyone else!

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 Post subject: Re: need math help!
PostPosted: Sat Apr 20, 2013 7:57 pm 

Joined: Sun Mar 03, 2013 4:27 pm
Posts: 16
Well, sorry guys for frustrating you with my poor math skills. The education system has not failed me, I am just really horrible at math, it confuses me easily. I'm very new to this and just trying to learn things the correct way, I figured a forum where others are experienced what be a good start. Thanks for the input and I won't be asking anymore, I'll figure anything else out on my own. Thanks.


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 Post subject: Re: need math help!
PostPosted: Sat Apr 20, 2013 8:41 pm 
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Joined: Mon Jan 14, 2008 11:14 pm
Posts: 24336
Location: Mistress Of Lather

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Irena
Closed minds are like faulty parachutes; they refuse to open.


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 Post subject: Re: need math help!
PostPosted: Sat Apr 20, 2013 8:56 pm 

Joined: Tue Jun 26, 2012 6:55 pm
Posts: 504
Location: Lakewood, WA


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 Post subject: Re: need math help!
PostPosted: Sun Apr 21, 2013 9:02 am 

Joined: Sun Mar 03, 2013 4:27 pm
Posts: 16
Thanks. I'm sure I will get it soon enough. When I say I am new to this, I mean really new, about a month or so. Before this, my other crafts didn't really require all the measurements soap/skin care making does. I'm having a ton of fun, just gotta get the technical stuff down. Thanks again : )


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 Post subject: Re: need math help!
PostPosted: Sun Apr 21, 2013 11:06 am 

Joined: Tue Jun 26, 2012 6:55 pm
Posts: 504
Location: Lakewood, WA
Hope - I am glad to hear it. Just apply yourself and you'll get it. But I think our education system fails in teaching math by not figuring out ways to get students engaged. I had horses when I was in high school - looking back, a smart math teacher would have figured out how to tie my passion for horses into math. For example...

"You need to purchase a large quantity of feed for your fabulous horse ranch - enough to last a year. Using the weights, ages, and other special needs of your livestock, such as brood mares, calculate the total weight of the feed you must purchase."

I would have been ALL OVER that math problem.


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