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Preservative for mineral sunscreen
Anyone had success with any natural preservatives in mineral sunscreen containing both ZnO and TiO2?
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6 Replies
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If I want to use the following preservatives together in one Cream or Lotion recipe (formula) what will be the ratio or percentages to be used safely:
DMDM Hydantoin
Methyl paraben
Propyl Paraben
My email: learnmodernreiki@yahoo.com -
@Mondonna I cannot advise using any natural preservatives in anything. Your best bet is to reduce the water activity (Aw) to the very lowest then add your Leucidal or whatever….good luck with that.
@samiditsamir_roubahi please begin a new thread, you have highjacked the one started by Mondonna here - not a good start, my friend. -
chemicalmatt said:@Mondonna I cannot advise using any natural preservatives in anything. Your best bet is to reduce the water activity (Aw) to the very lowest then add your Leucidal or whatever….good luck with that.
@samiditsamir_roubahi please begin a new thread, you have highjacked the one started by Mondonna here - not a good start, my friend.can you explain what are talking about please?
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@samiditsamir_roubahi - he means you are posting a question that is different from the one originally posted by @Mondonna . If you want responses to your question you need to start a new discussion.
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You can experiment with different preservatives? If you have $50 you can get your product tested in a lab for microbial growth. Its a fairly cheap way of determining (sort of) if your preservative is working. Outside of a professional lab, you can’t have a sterile product. You can look for eco cert preservatives. There are many to choose from. Check the PH of your product. You may need to use more than one preservative but I don’t know enough about this to give advice.
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Prob best to examine mineral sunscreen labels of major manufacturers.
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