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Teach Soap • View topic - SPF

Teach Soap

Soap Making Recipes, Tips and Tutorials
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 Post subject: SPF
PostPosted: Wed Jan 20, 2010 6:59 am 
Been making cp soap for several years and just expanded into lotions. I had a request from a customer to put "SPF" into my lotions :shock: . Apparently she doesn't realize that SPF, like octane in gasoline, is a measurement and not an ingredient. I know that some essential oils, etc. are photosynthesizers and can affect the skins ability to absorb rays, either positively or negatively.

If anybody can shed some light (no pun.....well....ok, a "little" pun) on this I'd be most appreciative. If you know of any ingredients, oils, butters, or compounds that can inhibit sunlight, please share.

Thanks!!


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 Post subject: Re: SPF
PostPosted: Wed Jan 20, 2010 11:48 am 
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Joined: Mon Jan 14, 2008 11:14 pm
Posts: 24336
Location: Mistress Of Lather
Shea Butter, avocado & sesame oil, contain a low SPF of around 3. They don't have enough filtering abilities. For a natural sunscreen with a higher SPF, try some titanium dioxide. You won't know exactly what the SPF is as that depends on your formula, how much was used etc...

Also, be careful selling this as an SPF lotion. According to the FDA as soon as you claim any sunscreen properties, it becomes an over the counter drug which must be tested and that's very expensive.

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


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 Post subject: Re: SPF
PostPosted: Wed Jan 20, 2010 1:01 pm 
Thanks. This is for a customer/friend and I made her aware upfront that there are no claims whatsoever. If titanium oxide has a known SPF, I can calculate the protection rating.

Thanks soapbuddy.


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 Post subject: Re: SPF
PostPosted: Wed Jan 20, 2010 1:57 pm 
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Joined: Mon Jan 14, 2008 11:14 pm
Posts: 24336
Location: Mistress Of Lather

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


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