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Is DL-Panthenol heat sensitive?
Hello chemists, according to ingredientstodiefor tech support panthenol is not heat sensitive:
“Panthenol is not heat sensitive however, it won’t perform or solubilize well in oils. It is water soluble.”
However, I have come across some info indicating that heat above 70 C can degrade panthenol:http://www.skinident.es/fileadmin/img/spanish-pictures/pdf/BASF_Panthenol.pdf
In the ‘stability and storage’ section:
Panthenol is stable at room temperature. It is stable against light and air but not heat. Heat (above 70°C) can cause racemization to D-Panthenol and cleavage to aminopropanol and pantolacton for D- and DL-Panthenol
I would like to include DL-Panthenol in a conditioner bar which is heated above 70 C to melt the ingredients. Adding panthenol while it cools down is difficult because the conditioner begins to solidify. Although the conditioner bar contains only oil-phase ingredients, if the panthenol is not degraded, rubbing the bar with wet hair would seem to provide the water required to put panthenol in solution.
Does anyone know if adding panthenol above 70 C would destroy/reduce its lustre and strengthening properties?
http://www.ingredientstodiefor.com/item/DL_Panthenol_100/173
Thank you!,
John
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8 Replies
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Since it is insoluble in oils, why are you adding it? I can’t see the combination working. Tocopherol would be a better choice, I believe.
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I like the lustre and strengthening properties and would like to provide these in the bar.
When I add it to the oil phase (mostly BTMS, cetyl alcohol) it disperses so that no grains are visible. I’m thinking the water will solubilize the panthenol as it is applied to wet hair.
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Isn’t BTMS an emulsifier? You didn’t say you had an emulsifier in there.
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Yes, I should have been more specific
You would have to be able to show that when the ingredient is added to the conditioner it has any effect on luster and hair strength. If you can’t show with or without it has an effect, then it doesn’t much matter if it is heat sensitive or not.
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Thanks Perry, but question is not answered, can Panthenol be heated?
Which information in bggy post regarding heating is correct?
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For safety and stability reasons you should never add ingredients that may breakdown into other substances in cosmetic products. Whether this will happen or not in your case is hard to say without performing a series of experiments. I would recommend looking for a substitute.
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It is supposed to be stable to 70C but I very much doubt that your melted oils etc are anywhere near as low as that. David is correct.
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