Magnesium Hydroxide and Deodorant Processing
We are experiencing some quality issues with a natural deodorant that I thought I would throw out to everyone to see what their thoughts were.
Current issue is the stick are setting up to be very soft/ mushy/ sticky and adhering to the dome of the component after about 72 hours. We have exhausted all the options of playing around with pour temp and cooling tunnel temperatures during the filling process. We have now moved on to investigating the raw materials and processing instructions.
We found the highest melt point of the waxes in this formula is 70c, we have been heating to 87c (this formula was given to us, we did not develop it) We are currently trialing reducing this temperature to 72°c to alleviate any possible structural damage that might be incuring. Waxes used are stearyl alcohol, beeswax and some jojoba esters.
We also use magnesium hydroxide and arrowroot powder as our starches. My questions are the following:
1. Does anyone know if heating to 87c is possibly causing the structure of the waxes/ arrowroot powder to be compromised? We found the peak gelatinization point of arrowroot powder to be 72c.
2. Does anyone know if the magnesium hydroxide (Trade name CareMag) needs to be added at a higher temperature or would you see no problem incorporating it at the newer lower temperature of 72 ?
3. Does anyone have any other possible suggestions that may be causing the soft/ mushy sticks we are seeing ?
Any help is greatly appreciated!
Thank you so much!
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