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Fragrances for Cationic/Anionic formulations.
The Fabric Softener formulation contains cationic surfactant which is different from hand cleaner or dish cleaner formulations which have anionics. How to check the compatibility of fragrances for the formulation ???
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6 Replies
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Most fragrances don’t care
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I was informed by a fragrance manufacturer that I cannot use any fragrance for fabric softeners. Fabric softeners are cationic in nature and hence require special fragrances.
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Most chemicals in fragrances are nonionic, thus they shouldn’t react with ionic surfactants.
At the end, you should test them yourself.
You can make a more concentrated solution to make any mild incompatibilities easier to spot.
You can also “incubate” them at higher than room temperatures to speed up the process. -
Some cationic detergents might react with aldehydes in EOs. These are less common in synthetic fragrances due to their inherent instability.
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Some colors fade under the influence of fragrance. Is there any other way to identify the effect of a particular fragrance on any formulation quickly ???
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Encapsulation of your fragrance is a nice way to prevent it from interacting with sensitive components of your product. I had a syndet bar with Lime EO which attacked the green color within around a week. It turned brown and the smell was also altered. By even partially encapsulating the fragrance, the new formulation is still bright green with an unchanged scent around 6 weeks later at room temperature (30C) completely open to the air.
I tried the same thing with Orange EO, dissolving it in cetyl alcohol with quick cooling followed by a sort of wet granulation using Carbomer and H20.
Anyway, these processes are very popular with detergents and fabric softeners. Many patents are available on the subject. Look for the ones that use Silicon Dioxide as a flow and drying agent.
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